these molecules have to pass across the cell membrane, which functions as a barrier — but not an impassable one. Like the exterior walls of a house, the plasma membrane is semi-permeable.

Medically reviewed by Marla Anderson, MD Multiple myeloma is a type of blood cancer that forms in plasma cells, white blood ...

All cells have an outer plasma membrane that regulates not only ... a specialized structure that facilitates their gatekeeping function. What Are Cellular Membranes Made Of? With few exceptions ...

A team from Osaka University has developed scSPOT, a new technique that reveals how immune cells called Tregs simultaneously ...

Red blood cell Carry oxygen. Contain haemoglobin (rich in iron) to carry oxygen. Biconcave shape to provide a large surface area for the diffusion of oxygen. No nucleus to provide more space for ...

There are four components - or parts - of the blood: red blood cells, white blood cells, plasma and platelets. Blood carries things you need, like oxygen and glucose, and waste products ...