Atlas of Avian Hematology

By Alfred M. Lucas; Casimir Jamroz | Go to book overview

Preface

An atlas of hematology is a picture book that functions as a dictionary. Minot, in his foreword to Atlas of the Blood in Children, by Blackfan, Diamond , and Leister ( 1944), aptly expressed the need for illustrations in hematology when he stated, "Illustration is essential in hematology. The inadequacy of language to convey the appearance of disease to the mind renders an appeal to the senses desirable whenever it can be employed, and when the objects themselves cannot be presented the best substitute for them is to be found in pictures."

It is hoped that this Atlas will enable investigators to forge ahead without the necessity for long delay in determining how the normal cell types and developmental stages should appear. The identification of the early and intermediate stages of development for most of the cell types has been worked out for the first time. The results of this research have been integrated with previous knowledge. All of the illustrations are original.

With the population expanding at an ever-increasing rate, the demand already is upon us to have available a stockpile of sound biological information on many subjects in order quickly and accurately to solve future problems of agriculture that will grow out of the necessity for making farm production more efficient. The control of disease is an obvious method of increasing our efficiency and is the objective of the long-range program on normal avian hematology that was undertaken at this Laboratory.

The subject matter covers not only the circulating blood of the adult bird, but also that of the embryo during its incubation from 2 days to hatching, and it includes the developmental stages found in blood-forming organs of both the adult and the embryo. The illustrations and text are concerned not only with the appearance of typical blood cells but also with the recognition of the atypical, the unusual, the abnormal, and the false. It is believed that future investigators of blood diseases of poultry will rarely find a cell in their preparations that has not been illustrated here, except cells invaded by organisms such as protozoan and other parasites.

A biopsy that involves blood is simpler and easier to procure than is a biopsy of any other tissue of the body, and even from a drop of blood much useful information concerning the health of the organism can be obtained.

It is intended that this publication shall serve the needs of the poultryman, the veterinarian, and the research worker in zoology, embryology, endocrinology, physiology, virology, and nutrition when these persons are confronted with the problem of identifying blood cells in birds. It will

-III-

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