Reproduction: Molecular, Subcellular, and Cellular

clusion of serum sickness in a subsection of "Delayed hypersensitivity" will unfortunately mislead the student into believing that serum sickness is a type of delayed hypersensitivity reaction, instead of merely an immediate reaction whose onset is delayed by a latent period necessary for sensitization to occur. Two entirely new chapters are offered in the current edition. Immnunological tolerance is discussed in a brief 12 page chapter which can be regarded only as an introduction. The last chapter (one of the additions) is a real contribution to the text as a whole; here the author deals with quantitation and statistical methods in a realistic and informative manner that will help the student design meaningful experiments, and more important, help him evaluate critically experiments of others. The book is written with a relaxed, often chatty style but occasionally the prose is fragmented by brief reportorial statements with references which appear to be awkward insertions. The print and format are easy to read and the low price makes one wonder why other, smaller, texts need to be so expensive. While I have taken issue with the general concept of a one-authored text in immunology, and portions of this book in particular, it does represent a remarkable achievement of considerable value to the student, who with some direction, will find it a useful text.