In 1986 further recognition was achieved with our work with bedside Leucocyte depletion filters.
Feline leucocyte antigen class II polymorphism and susceptibility to feline infectious peritonitis.
At the same time large numbers of these cells perish in the struggle, but even the death of these cells is of value to the body, as in the process of breaking down there are set free ferments which not only act detrimentally to the bacteria, but also may stimulate the bringing forward of another form of cell defenders - the mononuclear leucocyte.
Schaudinn has stated, however, that Trypanomorpha becomes, in certain phases, attached to a red blood-corpuscle (ectoglobular), and, in others, penetrates inside one and eventually destroys it (endoglobular); while his other avian parasite, Trypanosoma ziemanni, apparently draws up into itself the white corpuscle (leucocyte) to which it becomes attached.
Numerous polymorphonuclear leucocytes and a few mononuclear cells, one of which has taken up a leucocyte into its interior (phagocytosis).