Scanning electron micrograph showing in vitro fertilization of a hamster oocyte. The sperm head, near the center of the field of view, is engulfed by the microvilli on the surface of the oocyte membr...

Scanning electron micrograph showing a lateral view of sperm penetration of a hamster oocyte during vitro fertilization. As the membrane of the sperm head fuses with that of the oocyte, the microvill...

Scanning electron micrograph of the apical surface of neuromast organ of lateral line system in a 17-day-old zebrafish. The hair bundles at the top of each sensory cell emerge through a pore in the ...

Portion of a proximal convoluted tubule from a rat kidney with experimental hemoglobinuria. A mass of dense hemoglobin completely fills the tubule lumen and outlines the microvilli of the brush border...

Figure 327 from Chapter 13 (Cilia and Flagella) of 'The Cell' by Don W. Fawcett M.D. Longitudinal section of the apex of a hair cell from the saccular macula of the goldfish. The stereocilia are seen ...

Figure 325 from Chapter 13 (Cilia and Flagella) of 'The Cell' by Don W. Fawcett M.D. Histologists using the light microscope recognized a category of epithelial cell processes which had the appearance...