MICHEL DELARUE, ISM / SCIENCE PHOTO LIBRARY MICHEL DELARUE, ISM / SCIENCE PHOTO LIBRARY
Secondary oocytes of the African clawed frog, Xenopus laevis. This frog is a popular organism used in research in developmental biology. This is largely due to its large oocytes, which are easy to manipulate in the laboratory. An oocyte is the cell that develops into a mature female egg cell (ovum). Xenopus oocytes are around one millimetre in diameter, thus the magnification of this image is x20 when printed 10cm wide.
Model release not required. Property release not required.