| Back | Interactive CS18 Embryo Model |
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Key to anatomical regions
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| Back | Movies of CS18 embryos |
The movies below show volume renders of OPT models. No staining has been used on any of the specimens and the images were captured using autofluorescence with a FITC filter.
| N318 46XY |
N343 46XX |
N417 46XX |
| N451 46XY |
N563 46XY |
N757 46XX |
| Back | Painted Anatomical Regions |
The movies below show anatomical domains defined in the N318 model. The domains have been manually defined in the OPT model using specialised software and then visualised using commercial rendering packages.
The various domains are: neural tube - orange; heart - red; liver - dark green; optic vesicle - dark blue; otic vesicle - yellow; dorsal root ganglia - cyan.
| N318 46XY |
| Back | Carnegie Stage 18 Definition |
| Age is approximately 43 postovulatory days Length is approximately 12 - 17 mm External Features Include: the body is more of a unified cuboidal mass, both cervical and lumbar flexures are indicated; the digital plate of the hand is definitely notched, the elbow region is usually discernable, toe rays can be identified in some specimens; eyelid folds are present in the more advanced specimens; a distinct tip of the nose can be seen in profile. O'Rahilly R and Muller F [1987] Developmental Stages in Human Embryos. Carnegie Institute, Washington, Publication no. 637, and O'Rahilly R, Müller F (2010) Developmental stages in human embryos: revised and new measurements. Cells Tissues Organs. 192:73-84. PMID: 20185898. |