Seminiferous tubules. Light micrograph of a cross section through seminiferous tubules in an earthworm (Lumbricus terrestris) testis. The seminiferous tubules are the site of sperm production (spermatogenesis). In the central region of each tubule are spermatozoa, formed from gametes undergoing initial meiosis and later spermiogenesis.

Animal Art

Keep your furry and feathery friends close, whether they are a galloping stallion or a dog taking a selfie. Our gallery is here to turn empty walls into a cute and quirky display of animal art.

Psst! Did you know chimpanzees, elephants, and dolphins are some of the most intelligent mammals out there?