《病原生物学（人体寄生虫学）》课程实验课件（英文）05 Nematodes

Human ParasitologyDepartment of Pathogenic and ImmunologySHIHEZIUNIVERSITY

Human Parasitology Department of Pathogenic and Immunology Department of Pathogenic and Immunology SHIHEZI SHIHEZI UNIVERSITY

Nematodes

Nematodes (2)

Hookworm Eggs: 6 60 X 40 μm in size, oval inshape, shell is very thin and colorless. Content is 4-8 cells.+ Morphologically it is not possible to differentiatebetween A. duodenale and N. americanusDepartment of Pathogenic and Immunology

Hookworm Eggs: 60× 40 µ m in size, oval in shape, shell is very thin and colorless. Content is 4- 8 cells.  Morphologically it is not possible to differentiate between A. duodenale and N. americanus. Department of Pathogenic and Immunology Department of Pathogenic and Immunology

Pinwormegg:· Shape: 50 to 60m by25 μm, seed-like.? Shell: double,colorlessand transparent,thick and asymmetric. Content: a larva.DepartmentofPathogenicand Immunolog

Pinworm egg: • Shape: 50 to 60m by 25 µm, seed-like. • Shell: double,colorless and transparent, thick and asymmetric. • Content: a larva. Department of Pathogenic and Immunology Department of Pathogenic and Immunology

Department of Pathogenic and ImmunologyBancroftian microfilaria:body nucleequal sized, clearly, countable

Bancroftian microfilaria:body nuclei equal sized, clearly, countable. Department of Pathogenic and Immunology Department of Pathogenic and Immunology

MRDepartment of Pathogenic and Immunology头部尾部Bancroftian microfilaria: The cephalicspace is shorter without two caudal nuclei

Bancroftian microfilaria: The cephalic space is shorter without two caudal nuclei. Department of Pathogenic and Immunology Department of Pathogenic and Immunology

Microfilaria of B. malayi: the body nuclei isunequal sized, uncountable. The cephalic space islonger with two Terminal nuclei

Microfilaria of B. malayi: the body nuclei is unequal sized, uncountable. The cephalic space is longer with two Terminal nuclei

The cephalic space is longerwith two Terminal nuclei

The cephalic space is longer with two Terminal nuclei

Encysted larva of Trichinella spiralisone or more coil in a cyst in the skeletalmuscle fibers. This is infective stageTrichinella spiralislarvaeinmuscle(byP.W.PappasandS.M.WardropDepartment of Pathogenic and Immunology

Encysted larva of Trichinella spiralis : one or more coil in a cyst in the skeletal muscle fibers. This is infective stage. Department of Pathogenic and Immunology Department of Pathogenic and Immunology