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Carnegie Stage Section
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T-1 intercostal nerve, T-1 spinal ganglion, T-1 spinal nerve, brachial artery, brachial plexus, caudal edge of thymus gland, cephalic edge of left pleural cavity, esophagus muscularis, hemisternum, left digit 1 (thumb), lunate, median nerve, metacarpal 2, metacarpal 4, notochord, pericardial cavity, radius, rib 1, rib 2, rib 3, rib 4, rib 5, scapula, subarachnoid space, superior vena cava, trachea
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Carnegie Embryo #4090   |   Location: 14-9

Keywords: T-1 intercostal nerve, T-1 spinal ganglion, T-1 spinal nerve, brachial artery, brachial plexus, caudal edge of thymus gland, cephalic edge of left pleural cavity, esophagus muscularis, hemisternum, left digit 1 (thumb), lunate, median nerve, metacarpal 2, metacarpal 4, notochord, pericardial cavity, radius, rib 1, rib 2, rib 3, rib 4, rib 5, scapula, subarachnoid space, superior vena cava, trachea

Source: The Virtual Human Embryo.