• Volume render movies
  • Painted anatomical regions
  • Carnegie Stage Definition


Carnegie Stages 11 and 12

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.


CS11 N285 46XX
CS11 N662 46XX


CS12 N476 46XX
CS12 N288 46XX



Carnegie Stage 12

The movies below show anatomical domains defined in the N288 and N476 models. The domains have been manually defined in the OPT models 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; dermatomes - cyan.


N288 46XX
N476 46XX







Carnegie Stage 12 Definition


Age is approximately 26 postovulatory days

Length is approximately 3-5 mm

External Features Include: a characteristic curved posture, three pharyngeal arches are visible, the caudal neuropore is closing or closed; the otic vesicles are almost closed but not detached; the upper limb buds are beginning to appear.

O'Rahilly R and Muller F [1987] Developmental Stages in Human Embryos. Carnegie Institute, Washington, Publication no. 637)