parvum are shown in this study. The morphology of these stages, which have characteristics similar to those of some gregarines, support the contention that Cryptosporidium has closer affinity with gregarines. It also supports the necessity of reconsidering the life cycle of Cryptosporidiu...
Oocysts of Cryptosporidium parvum, in wet mount, seen with differential interference contrast (DIC) microscopy.? rounded, 4.2 to 5.4 μm in diameter.? Sporozoites are visible inside the oocysts, indicating that sporulation has occurred.? 二、生活史 简单,不需转换宿主 (5-11天) 无性生殖 - 裂...
P., and Morgan-Ryan, U., 2003, Morphology is not a reliable tool for delineating species within Cryptosporidium, J. Parasitol. 89:399–402. Google Scholar Fayer, R., 1994, Effect of high temperature on infectivity of Cryptosporidium parvum oocysts in water, Appl. Environ. Microbiol. 60...
Cryptosporidium parvum and Cryptosporidium hominis are responsible for more than 90% of infection in humans.111 Infections caused by Cryptosporidium felis, Cryptosporidium meleagridis, Cryptosporidium canis, and Cryptosporidium muris have also been reported.112 Cryptosporidium is a relatively common cause of...
rigorous stage-specific markers are lacking. We therefore sought to engineer transgenic parasites that delineate life cycle progression and took advantage of well-documented changes in nuclear morphology of the parasites10,15. We introduced a fusion ofCryptosporidium parvumhistone H2B (cgd5_3170) with ...
Cryptosporidium parvum and Giardia intestinalis are water- and food-borne intestinal parasites, which pose a threat to human health in the developed world Standard detection methods for clinical and water samples are based on microscopy and require skilled technicians to perform them correctly. ...
thought to be valid, based on host specificity, morphology, and molecular biology studies, and numerous other genotypes that may emerge as separate species.12,19-22 The bovine genotype is now designated by the species name C. parvum and is commonly found in humans and bovines. It infects a...
These findings indicate that although γδ T cells are not necessary for induction of intestinal inflammation in C. parvum-infected αβ T- cell-deficient mice, their presence does alter the morphology of the ensuing lesion. 展开 关键词: ectoparasites evolution homo Homo sapiens human evolution ...
South America, Australia, and Africa, whileC. parvumcauses more human infections in Europe, especially in the UK.C. hominiswas more prevalent in infants under 1 year and in females aged 15 to 44 years.C. parvumoccurrence peaks in spring, whileC. hominisduring the late summer and early ...
Cryptosporidium parvum is an intracellular protozoan parasite that causes a severe diarrheal illness of unclear etiology. Also unclear is the fate of the host cell upon parasite egress. We show in an MDCK cell model that the host cell is killed upon parasite egress; this death is necrotic, rath...