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Introduction

Stage 16 embryos have a greatest length of 8 to 11 mm and an estimated postfertilization age of 39 days. The retinal pigment is distinct and the foot plate has formed. The stage is represented by Carnegie embryo #6517. It has a greatest length of 10.5 mm (after fixation) and is considered to be in the most advanced third of the stage.

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New structures include brachial artery, intercostal nerves, nasal sac, neural arches, radial nerve, spleen, splenic artery.

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Also on EHD: Central Nervous System

Whole Body

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Left lateral view of the embryo prior to sectioning

Left lateral view of the embryo prior to sectioning

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