PROFESSORS P.M. MOTTA & S. MAKABE / SCIENCE PHOTO LIBRARY PROFESSORS P.M. MOTTA & S. MAKABE / SCIENCE PHOTO LIBRARY
Blastomere cell structure. Coloured scanning electron micrograph of the cell structure of blastomeres in the 4-cell embryo. Blastomeres are the cells formed by divisions of the fertilized egg. Here fractured sections of blastomeres can be seen. The cytoplasm (yellow) contains many dense bodies (green) which are most likely primitive mitochondria. The large hole at centre left is a vacuole opening up onto the cell surface. Small projections (microvilli) can be seen inside the vacuole. Magnification: x4,200 at 5x7cm size.
Model release not required. Property release not required.