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Carnegie Stage 2 3-1 3-2 4 5a-1 5a-2 5b 5c 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 All

Carnegie Stage 14

Aalar plate missing (artifact) (1), alar plate of metencephalon (primordium of cerebellum) (4), alar plate of myelencephalon (32), amnion on surface of umbilical cord (26), anal tubercle (5), anterior interventricular groove (6), arytenoid swelling (12), atrioventricular groove (3)
Bbasal plate of metencephalon (5), bile duct (17), bilobed thyroid gland (7), blastema of proximal humerus (1), blood cells in pericardial cavity (artifact) (1), brachial plexus (33)
CC-1 spinal ganglion (37), C-1 spinal nerve (20), C-1 ventral root (13), C-2 spinal ganglion (60), C-2 spinal nerve (9), C-2 ventral root (4), C-3 dorsal root (5), C-3 spinal ganglion (56), C-3 spinal nerve (14), C-3 ventral root (2), C-4 dorsal root (1), C-4 spinal ganglion (52), C-4 spinal nerve (16), C-4 ventral root (3), C-5 spinal ganglion (51), C-5 spinal nerve (16), C-6 dorsal root (2), C-6 spinal ganglion (51), C-6 spinal nerve (21), C-6 ventral root (2), C-7 spinal ganglion (51), C-7 spinal nerve (12), C-7 ventral ramus (2), C-8 spinal ganglion (49), C-8 spinal nerve (15), C-8 ventral ramus (1), C-8 ventral root (3), caudal edge of C-1 spinal ganglion (2), caudal edge of C-2 spinal ganglion (1), caudal edge of C-4 spinal ganglion (2), caudal edge of C-5 spinal ganglion (2), caudal edge of C-6 spinal ganglion (2), caudal edge of cochlear duct primordium (1), caudal edge of interventricular foramen (2), caudal edge of left lobe of liver (8), caudal edge of left primary bronchus (1), caudal edge of liver (3), caudal edge of pharyngeal arch 3 (2), caudal edge of right atrium (6), caudal edge of right lung sac (1), caudal edge of T-1 spinal ganglion (1), caudal edge of T-2 spinal ganglion (2), caudal end of upper limb (8), caudal part of C-3 spinal ganglion (1), caudal part of C-8 spinal ganglion (1), caudal part of liver (1), caudal part of myelencephalon (1), caudal part of myelencephalon (rhombomere D) (1), caudal part of pericardial sac (1), caudal part of rhombencoel (fourth ventricle) (3), caudal part of right atrium (2), caudal part of septum transversum (1), caudal part of sinus venosus (1), caudal part of T-1 spinal ganglion (1), caudal part of T-3 spinal ganglion (2), cecum of midgut (3), celiac artery (10), cephalic edge of C-1 spinal ganglion (4), cephalic edge of C-2 spinal ganglion (5), cephalic edge of C-3 spinal ganglion (2), cephalic edge of C-4 spinal ganglion (2), cephalic edge of C-8 spinal ganglion (1), cephalic edge of lateral lingual swelling of tongue (1), cephalic edge of liver (7), cephalic edge of lower limb (6), cephalic edge of metanephric cap (2), cephalic edge of metanephric diverticulum (1), cephalic edge of pericardial cavity (6), cephalic edge of pharynx (6), cephalic edge of roof plate of rhombencephalon (2), cephalic edge of shoulder region (1), cephalic edge of sinus venosus (1), cephalic edge of superior ganglion of vagus nerve (CN X) (1), cephalic edge of T-1 spinal ganglion (1), cephalic edge of T-3 spinal ganglion (2), cephalic edge of trigeminal ganglion (CN V) (3), cephalic edge of vestibular part of otic vesicle (2), cephalic edge of vestibulocochlear / geniculate ganglia (1), cephalic end of gonadal ridge (1), cephalic part of notochord (1), cephalic part of shoulder region (1), cephalic part of superior ganglion of vagus nerve (CN X) (1), cephalic part of T-2 spinal ganglion (1), cephalic part of T-4 spinal ganglion (1), cephalic recess of lesser sac (omental bursa) (5), cerebral primordium (vesicle) (7), cervical plexus (17), chiasmatic plate (5), Co-1 spinal ganglion (18), coccygeal somites (6), cochlear duct primordium (1), commissural plate (2), common iliac artery (11), common pulmonary vein (6), conotruncal ridge(s) (3), continuity of aorta (1), continuity of caudal and cephalic parts of mesonephric duct (2), continuity of neural canal (1), continuity of postcardinal vein (2), conus cordis (outflow tract) (8), corneal epithelium (6), corpus striatum (17)
Ddense caudal part of sclerotome (32), dermatome (30), dermatomyotome (19), diencoel (third ventricle) (14), distal limb of midgut loop (3), distal part of stomach (1), dorsal atrioventricular endocardial cushion (3), dorsal meso-esophagus (34), dorsal pancreas (13), dorsal root(s) (22), ductus venosus (126), duodenum (80)
Eedge of adenohypophysial pouch (1), edge of aorta (2), edge of cerebral primordium (vesicle) (1), edge of diencephalon (7), edge of diencoel (third ventricle) (1), edge of endolymphatic duct (6), edge of frontal prominence (9), edge of hindgut (1), edge of left atrium (6), edge of left umbilical vein (1), edge of lens vesicle (4), edge of mandibular prominence of pharyngeal arch 1 (2), edge of metencephalon (5), edge of optic cup (7), edge of optic stalk (CN II) (7), edge of peritoneal cavity (11), edge of right atrium (4), edge of telencephalon (1), endocardial tissue (1), endolymphatic duct part of otic vesicle (2), epipharyngeal placode (3), epiploic foramen (8), epithelium of larynx (1), external iliac artery (9), external layer of optic cup (4)
Fforamen cecum of tongue (6), frontal prominence (36), fused basilar artery (1)
Ggall bladder primordium (3), geniculate and vestibulocochlear ganglia (CN VII and CN VIII) (3), geniculate ganglion (CN VII) (19), genital tubercle (10), glomerular capsule (2), glomerulus (8), gonadal ridge (58)
Hhepatic duct(s) (7), hip region (6), hypoglossal nerve (CN XII) (78), hypothalamic sulcus (85), hypothalamus (98)
Iinferior ganglion of glossopharyngeal nerve (CN IX) (23), inferior ganglion of vagus nerve (CN X) (48), inferior mesenteric artery (25), inferior vena cava (181), intermediate zone (192), internal iliac artery (11), internal layer of optic cup (4), intersegmental groove (6), interventricular septum (11), involuting right umbilical vein (20)
Jjunction of accessory and vagus nerves (CN XI and CN X) (1), junction of aortic sac and pulmonary arch (1), junction of basilar artery and vertebral arteries (5), junction of bile duct and hepatic ducts (1), junction of collecting tubule and mesonephric duct (1), junction of diencoel (third ventricle) and mesencoel (1), junction of dorsal aorta and dorsal intersegmental artery (1), junction of dorsal aorta and internal carotid artery (1), junction of ductus venosus and inferior vena cava (4), junction of ductus venosus and left umbilical vein (2), junction of duodenum and hepatic duct (1), junction of duodenum and stomach (5), junction of endolymphatic duct and vestibular part of otic vesicle (5), junction of esophagus and stomach (10), junction of hindgut and midgut (8), junction of isthmus and mesencephalon (1), junction of lateral and medial nasal prominences (9), junction of lower limb and pelvic region (2), junction of marginal zone and T-11 spinal ganglion (1), junction of maxillary and medial nasal prominences (6), junction of mesonephric duct and metanephric diverticulum (5), junction of mesonephric duct and tubule (7), junction of metencephalon and root of trigeminal nerve (CN V) (1), junction of pericardial sac and umbilical cord (1), junction of peritoneal cavity and umbilical coelom (5), junction of primary head vein and stem of anterior dural venous plexus (1), junction of right common cardinal vein and sinus venosus (2), junction of umbilical cord and ventral body wall (2)
LL-1 body segment (3), L-1 spinal ganglion (52), L-2 spinal ganglion (62), L-3 spinal ganglion (65), L-4 / L-5 interganglion region (1), L-4 spinal ganglion (50), L-5 / S-1 interganglion region (2), L-5 spinal ganglion (53), lamina terminalis (16), laryngeal condensation (18), lateral lingual swelling of tongue (18), lateral nasal prominence (26), lateral ventricle (163), left hepatic vein (7), left lobe of liver (203), left lung sac (4), left postcardinal vein (4), left precardinal vein (10), left primary bronchus (23), left venous valve (18), lens pit (2), lens vesicle (10), limb mesenchyme (4), liver (31), loose cephalic part of sclerotome (16), lower limb (27)
Mmamillary region (5), mammary crest (10), marginal vein (80), marginal zone (185), maxillary nerve (CN Vâ‚‚) (34), maxillary venous plexus (14), medial nasal prominence(s) (30), mesonephric artery (6), metanephric cap (3), metanephric diverticulum (18), metencephalon (44), metencephalon (presumptive pons region) (2), midgut loop (9), mucoid connective tissue (14), myelencephalon (44), myelencephalon (caudal part of rhombencephalon) (1), myelencephalon (rhombomere D) (2), myotome (44)
Nnasal capsule (16), nasal pit (4), neural arch primordium (12)
Oolfactory area (8), omphalomesenteric (superior mesenteric) vein (11), omphalomesenteric vein (1), ophthalmic nerve (CN V₁) (29), optic cup (4), optic groove (23), optic stalk lumen (CN II) (8), oral cavity (37), origin of left common cardinal vein (1), origin of mesonephric artery (1), origin of right common cardinal vein (1), otic capsule (20)
Pparachordal condensation (12), pharyngeal groove 4 (1), pleuropericardial membrane (15), pleuroperitoneal canal (pleural cavity) (1), pontine flexure region (4), post anal gut (12), posterior cerebral artery (34), posterior communicating artery (62), posterior interventricular groove (3), presumptive laryngeal pharynx (1), presumptive nasopharynx (2), pretectum (5), primary interatrial foramen (foramen primum) (11), primary maxillary vein (1), proximal limb of midgut loop (2), pulmonary arch (7), pulmonary pit (1)
Rretinal fissure (4), right common cardinal vein (8), right hepatic vein (7), right lobe of liver (224), right lung sac (8), right postcardinal vein (4), right precardinal vein (9), right primary bronchus (23), right venous valve (20), roof plate missing (artifact) (2), roof plate of metencephalon (11), roof plate of myelencephalon (25), root of hypoglossal nerve (CN XII) (39)
SS-1 / S-2 interganglion region (3), S-1 spinal ganglion (57), S-2 spinal ganglion (54), S-3 / S-4 interganglion region (2), S-3 spinal ganglion (41), S-4 / S-5 interganglion region (2), S-4 spinal ganglion (32), S-5 / Co-1 interganglion region (2), S-5 spinal ganglion (23), shoulder region (11), somite remnant (3), spinal accessory nerve (CN XI) (103), splanchnic mesenchyme (2), spleen primordium (7), stem of anterior dural venous plexus (9), stem of middle dural venous plexus (4), stem of posterior dural venous plexus (9), stomach (20), sulcus medius (19), superior ganglion of glossopharyngeal nerve (CN IX) (17), superior ganglion of vagus nerve (CN X) (31), superior mesenteric artery (82), surface epithelium (3), synencephalon (9)
TT-1 spinal ganglion (45), T-10 body segment (3), T-10 spinal ganglion (44), T-11 body segment (1), T-11 dermatome (1), T-11 spinal ganglion (43), T-12 body segment (4), T-12 dermatome (1), T-12 spinal ganglion (49), T-2 spinal ganglion (36), T-3 spinal ganglion (41), T-4 spinal ganglion (44), T-5 spinal ganglion (42), T-6 body segment (3), T-6 spinal ganglion (47), T-7 body segment (4), T-7 spinal ganglion (42), T-8 body segment (4), T-8 spinal ganglion (44), T-9 body segment (4), T-9 spinal ganglion (44), telencephalon (8), thyroglossal duct (11), tip of caudal eminence (2), tissue fracture (artifact) (3), trabecular part of right ventricle (31), trachea (70), tracheal bifurcation (13), transverse rhombencephalic sulcus (6), trigeminal ganglion (CN V) (47), truncus arteriosus (outflow tract) (14), tuberculum impar (4), tuberculum impar of tongue (4)
Uumbilical coelom (137), unfused basilar artery (2), upper limb (40)
Vventral atrioventricular endocardial cushion (5), ventral edge of rhombencoel (fourth ventricle) (1), ventral pancreas (9), ventral part of rhombencoel (fourth ventricle) (1), ventral root (18), ventricular zone (185), vertebral artery (105), vestibular part of otic vesicle (19), vestibulocochlear ganglion (CN VIII) (14)

Carnegie Stage 2 3-1 3-2 4 5a-1 5a-2 5b 5c 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 All