Fig. 5

Megalomeronts of Haemoproteus majoris (lineage hPARUS1) from the internal organs of the great tit Parus major. a–c Liver. d–f Lungs. g–i Spleen. j–l Kidneys. Same megalomeronts are shown at three different magnifications: a, d, g, j, 200×; b, e, h, k 400×; c, f, i, l 1000×. Note that the structure of the megalomeronts was similar in different organs, i.e. the parasites were covered with prominent capsule-like walls and contained numerous irregularly-shaped cytomeres, in which merozoites develop. Long simple arrows: megalomeronts; short simple arrows: capsule-like wall; simple arrowhead: cytomeres; triangular arrowhead: merozoites. Haematoxylin-eosin stained histological sections. Scale-bar: 20 μm