Ciliates such as Paramecium have specialized sites for endocytosis and exocytosis. Most of their surface is not available for internalization of membrane because of the underlying alveolar sac system....

Ciliates such as Paramecium have specialized sites for endocytosis and exocytosis. Most of their surface is not available for internalization of membrane because of the underlying alveolar sac system....

This section of liver from newborn rat shows glycogen deposits that are especially abundant in rat liver at this developmental stage. Deposits of glycogen, the storage form of glucose, are abundant i...

The highest concentration of parasomal sacs is found in the oral region associated with the three ciliary membranelles, called in Paramecium, the ventral amd dorsal peniculi and the quadrulus. This mi...

This section of liver from newborn rat shows glycogen (gly) deposits that are especially abundant in rat liver at this developmental stage. Deposits of glycogen, the storage form of glucose, are abund...

The cytosol of Paramecium contains many vesicles of various sizes, shapes and contents as well as complex particles such as ribosomes and glycogen granules. The rough endoplasmic reticulum exists as m...

An image showing the mitochondria packed with tubular cristae and the cytosol contains a jumble of microtubules. Basal bodies of the somatic kineties appear as dikinetids with a ribbon of transverse m...