Human Embryo, With Some Remaining Sperm Cells
Editor's Pics Jul 06, 2019
Image credit: David Becher, Wellcome Images
A confocal micrograph of a human embryo, with some remaining sperm cells, about five days after fertilization. The nuclei of both the sperm and cells of the embryo are stained purple, the tails of the sperm are green and the gap junctions, which form connections between the cells are highlighted in blue.