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 ...

This article was originally published with the title “ The Circulatory System of Plants ” in Scientific American Magazine Vol. 200 No. 2 (February 1959), p. 44 doi:10.1038 ...

Circulatory system Transport substances ... Support and protect internal structures. Produce blood cells. Store and release calcium. Specialised to: Respond to internal and external stimuli ...

Proponents claim a dose of the white stuff can boost endurance and mental clarity. But should you take this latest trend with ...

Researchers think that microgravity could help grow liver "organoids" that could be used in medical research and even in ...

Each summer, European tourists descend on Death Valley, following the alleged footsteps of a famed German author. It’s this ...

In general, a lymph node is a checkpoint along the route of your lymphatic system, a part of your immune system that’s responsible for catching and filtering out foreign substances that could cause ...

For the neurons in the brain to work smoothly and be able to process information, the central nervous system needs ... brain endothelial cells lining the inner walls of blood vessels regulate the ...

The most commonly used ones include ibuprofen, paracetamol and aspirin.But just because they're inexpensive and easily obtainable doesn't mean you needn't be careful when taking them. One may work ...