BACKGROUND No data is available on morphology and genetic characteristics of Echinococcus granulosus derived from donkeys of Iran, despite of its existence in donkeys. In the present study morphometric variations of the rostellar hooks of protoscoleces and genotype characteristics of hydatid cyst of donkey from Iran were determined. METHODS Protoscoleces prepared from hydatid cyst of donkey o...

The C cell complexes in the dog thyroid are the remnants of ultimobranchial bodies which retain fetal characteristics, and contain cyst structures showing various sizes, shapes and liminal contents. This study deals with these cysts with regard to their morphology, immunoperoxidase reactions to anti-calcitonin, anti-19S thyroglobulin and anti-C-thyroglobulin antisera, and ability to incorporate...

Drosophila adult females but not males contain high levels of the steroid hormone ecdysone, however, the roles played by steroid signaling during Drosophila gametogenesis remain poorly understood. Drosophila germ cells in both sexes initially follow a similar pathway. After germline stem cells are established, their daughters form interconnected cysts surrounded by somatic escort (female) or cy...

Species of Acanthamoeba have been traditionally described using morphology (primarily cyst structure), or cytology of nuclear division (used by Pussard and Pons, 1977). Twenty-plus putative species were proposed based on such criteria. Morphology, however, is often plastic, dependent upon culture conditions. DNA sequences of the nuclear small subunit (18S) rRNA that can be used for the study of...

Steroid cell tumors of the ovary are extremely rare, accounting for only 0.1% of all ovarian tumors. Of these, steroid cell tumors, not otherwise specified (NOS) constitute about 56% of all steroid cell tumors. Most steroid cell tumors secrete steroid hormones, and only about 10% to 15% of patients are asymptomatic. The morphology of steroid cell tumors, NOS is predominantly reported to be soli...

Objective: To report a rare case of urachal remnant cyst mimicking benign ovarian cyst.

Three populations of the corn cyst nematode Heterodera zeae, one found in the rhizosphere of a fig tree and two infecting corn, were studied using the morphology and morphometry of cysts and second-stage juveniles, and compared with other populations. The intrapopulation and intraspecific variability are discussed. A simple and improved technique to prepare vulval cones for SEM is described. Th...

Cystic echinococcosis (CE)/hydatid cyst is one of the most important helminthic diseases in the world. The treatment of hydatid cyst ranges from surgical intervention to chemotherapy, although the efficacy of chemotherapy is still unclear. Postoperative complication which results from the spillage of cysts during surgical operation is one of the most important concerns in surgical treatment of ...

R of the mesonephric or Wolffian system may persist in the adjacent area to the ovary. This ductal system runs anterolaterally toward the vaginal wall and in rare cases between the anterior vaginal wall and the urethra. Mucous (dysontogenetic) cysts arise from the minor vestibular gland, or from the mesonephric duct remnants, and may be found at the introitus and labia minora. Clinically, cysts...