Protozoer

In this book Dr Bell disinters and re-analyzes the early 20th-century debate on senescence and death in animals and plants, and argues that protozoan lineages senesce as the result of an accumulated load of mutations that can be shed only through sexual reproduction.

The search for new producers of biologically active substances (BAS) against human and animal diseases continues to be an important task in biology and medicine. This book then is the result of the research on the project: "Biologically active substances of the Mastigophora (Flagellates)".