“…As far as one can compare the basophil granules with those of other animals (some accounts in the literature are very sketchy and photographs are rarely presented) the granules in Trichosurus are of moderate size, relatively uniform size and shape, and relatively numerous and densely packed in the cytoplasm. In pig (SCARBOROUGH, 1931/2) the granules are plentiful and probably about the same size as in Trichosurus; in camels and llamas (PONDER, YEAGER and CHARIPPER, 1929a) and in cattle (DIMOCK and THOMPSON, 1906/71) they are large and numerous; in a number of Primates (PONDER, YEAGER and CHARIPPER, 1929b) they are coarse but the number varies with the species; in man himself (ACKERMAN, 1963;BLOOM and FAWCETT, 1968) they vary much in size and also in shape and, from my own observations, are less densely packed than in the cells of Trichosurus; in cat (SCARBOROUGH, 1931/2;GILMORE, GILMORE and JONES, 1964) the granules are large and sparse; in guinea pig (LUCIA and BLOOM and FAWCETT, 1968) (PONDER, YEAGER and CHARIPPER, 1929c), exhibits some basophilia in camels (PONDER, YEAGER and CHARIPPER, 1929a) and stains pink with blood stains in Macropus Lymphocytes. The nuclei of mammalian lymphocytes generally present a fairly standard appearance of a round or slightly indented outline with coarse and densely packed chromatin clumps, especially in the smaller cells.…”