transport oxygen around the body ... White blood cells are part of the immune system and are involved in destroying pathogens (disease-causing micro-organisms bacteria, viruses and fungi).

By reducing the need to transport oxygen from Earth ... These chemicals could not only supply astronauts' life support ...

Plasma is a straw-coloured liquid that makes up just over half the volume of blood. Types of blood cell and cell fragments: red blood cells white blood cells platelets This table explains the ...