Morphological study of stained preparations of peripheral and venous human blood using a light microscope, with their correct interpretation, allows you to see pathological changes in blood cells and identify their biological culprits: trichomonas and & # 96; platelets & # 96;, streptococci, staphylococci, fungi. Compiled by the author & # 96; Atlas of human blood cells and parasites & # 96; makes it possible to carry out morphological comparison of blood trichomonas taken by hematologists as blood and bone marrow cells, with vaginal and oral trichomonas, as well as with tumor cells of various human and animal neoplasms.