Fig. 12

Morphological features of gametocytes, which are used for identification of Haemoproteus species parasitizing Coliiformes birds. Macrogametocytes of Haemoproteus undulatus (a, b). Note that growing gametocytes are usually appressed to the envelope of infected erythrocytes but do not touch the nuclei of erythrocytes along their entire margin (a). Form of advanced gametocytes is close to circumnuclear (b) or circumnuclear. Long simple arrows—host cell nuclei. Short simple arrows—parasite nuclei. Simple arrowheads—pigment granules. Simple wide long arrows—unfilled spaces between gametocytes and nuclei of infected erythrocytes. Other explanations are given in the text