Criopreservación de Espermatozoides Caninos a - 80C

Modificación de un dispositivo hidráulico para el bandaje controlado del tronco de la arteria pulmonar en caninos

letude de la typologie narrative de mort a credit de louis ferdinand celine

چکیده ندارد.

Vasovasostomy: a review of technical considerations and evaluation of results in the Hospital General de México

La vasectomía constituye un método de anticoncepción electivo para el varón, que consiste en la ligadura o remoción de un segmento de ambos conductos deferentes, evitando así el paso de espermatozoides de los testículos a los conductos eyaculadores. Alrededor de 6% de los pacientes vasectomizados, solicitaran en el futuro la recanalización de la misma. Objetivo: El propósito de este documento e...

Sperm retrieval techniques in azoospermic patients: PESA, MESA, TESA, TESE and MICROTESE Técnicas de recuperação de espermatozoides em pacientes azoospérmicos: PESA, MESA, TESA, TESE e MICROTESE

Received on: April 28, 2009 – Accepted on: Oct 15, 2009 aBstRact Azoospermia is defined as the absence of mature spermatozoa in semen analysis after centrifugation. The causes of azoospermia may be related to spermatogenesis defects and classified as nonobstructive azoospermia, or to the obstruction of the efferent ducts of the genital tract and classified as obstructive azoospermia. Before the...

Melatonin Protective Role in Mouse Cauda Epipidymal Spermatozoa Damage Induced by Sodium Arsenite Rol Protector de la Melatonina en el Daño de Espermatozoides de Cauda Epididimaria en Ratón Producido por Arsenito de Sodio

The cellular mechanism of toxicity of arsenic includes generating reactive oxygen species (ROS) (De Vizcaya-Ruiz et al., 2009). Indeed, sperm are highly sensitive to the action of ROS due to the large amount of polyunsaturated fatty acids that compose their plasma membrane (Golden et al., 1999). Furthermore, due to sperm morphology, they have a very scarce cytoplasm, so that the amount of antio...