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Hematology is developing into many subspecialties. There is immunohematology (Rh, Hr.; Kell, Kidd, Lewis, etc.), the coagulationists, the students of iron metabolism, etc. These refer to function, but there have been new developments in the study of form as well. These depend on new instruments (electron microscope, phase microscope, etc.). There has therefore been the development of phase-contrast hematology. This new microscope enables us to study the living cells unaffected by stains. This new method is valuable for hematologists, bacteriologists, and pathologists.
This small 75-page volume is highly recommended for its excellent 90 illustrations. These are splendid photographs of actual phase-contrast appearance of erythrocytes, polymorphonuclear leucocytes, eosinophiles, myeloblasts, lymphocytes, megakaryocytes, leukemic cells, nonleukemic cells, plasma cells, tumor cells, lymphosarcoma cells, and bacteria. They are of great value to all students of this new methodology. There could be a better text accompanying these splendid photographs. Information as to how to set
Phasenkontrast-Hamatologie.. AMA Arch Intern Med. 1954;94(6):1048. doi:10.1001/archinte.1954.00250060182018