Interactive CS15 Embryo Model


        Key to anatomical regions

  • Neural tube
  • Eye
  • Otic vesicle
  • Dorsal root ganglia
  • Heart
  • Liver

Movies of CS15 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.


N340 46XX
N464 46XY
N504 46XY


N564 46XY
N565 46XX
N1365 46XX


The movies below show volume renders of High Resolution Episcopic Microscopy (HREM) models. Other HREM models can be found here.

N1717 46XY
N1721 46XY

Painted Anatomical Regions


The movie below shows anatomical domains defined in the N340 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.


N340 46XX




Carnegie Stage 15 Definition



A 3D model of a human embryo, Carnegie stage 15


Age is approximately 36 postovulatory days

Length is approximately 6 - 11 mm

External Features Include: lens vesicles are closed; nasal pits are appearing; hand plates forming.

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.