How can we isolate and study the genes one at a time? The answer is to clone them.
The body protects itself against infection by bacteria, viruses, molds and parasites by having a system for recognising these
The growth and behaviour of cells are controlled by "actors that regulate their performance. When this regulation goes astray
We are all different, in looks, in behaviour, and in our susceptibility to disease.
All animals depend on communication, at least for reproduction and often for a complex social life.
A special branch of communication involves the use of echoes to replace sight when visibility is poor.
Communication is so important that we often want to do it quickly and over long distances.
The body consists of many different organs each composed of enormous numbers of living cells.