Hammondia hammondi and @entity3204 are feline coccidian that are morphologically, antigenically, and phylogenitically related. Both parasites multiply asexually and sexually in feline intestinal enterocytes but H. hammondi remains confined to enterocytes whereas @entity3204 also parasitizes extra-intestinal tissues of the cat. Here, we studied multiplication of H. hammondi in feline intestine and compared with @entity3204 cycle. Five parasite-free @entity468 were inoculated orally with tissue cysts and free bradyzoites from skeletal muscles of gamma interferon gene knock out @entity19 and killed at 1, 3, 4, 6, and 7 days later. At 1 and 3 day post inoculation (DPI) numerous individual intracellular bradyzoites were detected in histological sections of small intestine. At 4 DPI only schizonts were found and they were located in enterocyte cytoplasm above the host cell nucleus. At 6 and 7 DPI both schizonts and gamonts were seen and they were located in enterocytes. Ultrastucturally, schizogonic and gametogonic development of H. hammondi was similar to @entity3204 . However, in H. hammondi merozoites rhoptries were longer, and coiled and contained more micronemes than in @entity3204 . Ultrastructural development is illustrated in detail. This article is protected by copyright. All rights reserved.

Life cycle of Hammondia hammondi (Apicomplexa: Sarcocystidae) in XXXX .

@entity19 :: ('10090', 'Species') :: ['mice'] @entity468 :: ('9685', 'Species') :: ['cats'] @entity3204 :: ('5811', 'Species') :: ['Toxoplasma gondii', 'T. gondii']
@entity468 :: (9685,Species) :: ['Cats']
