Now showing items 1-10 of 3851
ULTRASTRUCTURE OF ENDOCRINE CELLS OF THE STOMACH (PROVENTRICULUS AND GIZZARD) OF THE RED-CAPPED CARDINAL (Paroaria g. gularis, LINNAEUS, 1766)
(Sociedad Chilena de Anatomía, 2001)
Ultrastructural Analysis of the Oocytes of Female Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae) Ticks Subjected to the Action of Azadirachta indica A. Juss (Neem)
(Informa Healthcare, 2012-02-01)
The present study provides ultrastructural information about the acaricidal effects of neem (Azadirachta indica A. Juss) on the ovaries of R. sanguineus engorged females. In general, the main damage caused in the oocytes ...
The ultrastructure of the pre-meiotic and meiotic stages of spermatogenesis in Plagioscion squamosissimus (Teleostei, Perciformes, Sciaenidae)
Spermatogenesis of 'corvina' P. squamosissimus starts from a stem cell that gives rise to germ cells. These cells are enveloped by Sertoli cells, forming cysts. The germ cells in the cysts are all at the same stage of ...
Ultrastructural Study of Spermatogenesis in Eisenia foetida (Annelida, Oligochaeta)
(Sociedad Chilena de Anatomía, 2007)
Ultrastructural aspects of the retractor ocular bulbi muscle in the opossum (Didelphis albiventris)
(Editrice Compositori Bologna, 1999-01-01)
In the present study the different types of muscle fibers of the retractor ocular bulbi muscle of the South American opossum were classified according to their ultrastructural characteristics. The tridimensional characteristics ...
Giardia agilis: Ultrastructure of the Trophozoites in the Frog Intestine
(Instituto Oswaldo Cruz, Ministério da Saúde, 1998-05-01)
Intestine samples of Bufo sp. tadpoles with parasitism confirmed for Giardia agilis were studied by transmission electron microscopy. The G. agilis trophozoites were long and thin. The plasma membrane was sometimes undulated ...
Ultrastructural aspects of oogenesis and oocyte primary growth in Serrasalmus spilopleura (Teleostei, Characiformes, Characidae)
(Churchill Livingstone, 2001-06-01)
The ultrastructural characteristics of the organelles present in Serrasalmus spilopleura oogonia and oocytes undergoing primary growth were described in detail, considering its role in the nuclear and cytoplasmic metabolic ...