The protozoa are an eclectic assemblage of organisms encompassing a wide range of single-celled and multiple-celled colonial organisms lacking tissue organiza tion, but exhibiting remarkably refined biological behavior. In some modern classifications, they are classified as a subkingdom among the Protista (eukary otic single-celled organisms). Although they are not considered a formal cate gory by some taxonomists and some biologists consider the name inappropriate (inferring that they are the first unicellular animals, although some photosynthe size), it is still convenient to consider this group of organisms as an informal collection under the heading of protozoa. Their cosmopolitan distribution, sig nificant ecological role in mineral recycling and enhancement of carbon flow through lower trophic levels of food webs, and remarkable cellular adaptations to enhance survival in diverse environments make them significant organisms for biological investigation. In some cases, biologists are introduced to this group in first level courses or in invertebrate zoology, but never develop a full appreciation for the diverse and biologically sophisticated characteristics of these organisms. This book is intended as a survey of broad concepts in protozoan biology with an emphasis on comparative data. The focus is on the zoological aspects of the group. Topics more closely related to plantlike characteristics, as presented in books on phycol ogy, are not considered in detail here. A sound background in modern biology and an introduction to cellular biology will be helpful in understanding Chapters 15 and 16, which include a substantial amount of information on biochemistry.

The introductory textbook "Protozoology" deals with one of the five kingdoms of living organisms: the Protista. The text is intended to be used by upper division college students & graduates who are enrolled in protozoa. It also can be used as reference text which outlines this group for researchers, instructors, or authors of textbooks directed at a more general audience.

Research in Protozoology is the third book in a four-volume series on protozoological research. Like the previous two, this volume covers the cytology, parasitology, fibrillar systems, and genetics of protozoans. This volume explores the immunological aspects of infections caused by protozoans, identifies the organisms that live in and on protozoans, and describes the pathogenic and metabolic pathway of protozon infections. It also discusses the protozoan fibrillar system and the macronucleus of ciliates. This book will be of interest to persons dealing with studies on the genetics aspects, cytology and parasitology of protozoans.

This is a new and fully revised edition of Jeffrey and Leach: Atlas of Medical Helminthology and Protozoology. Helminths (worms) and similar parasites are a major medical problem in much of the world and perhaps the largest single cause of morbidity and mortality (eg malaria, elephantiasis, trypanosmiasis). The diagnosis of these conditions still largely rests on the microscopic examination of, for example, faeces. This atlas illustrates the different myriad of different organisms and how to identify them.