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Activating mutation of the stimulatory G protein (gsp) as a putative cause of ovarian and testicular human stromal Leydig cell tumors
(1998)
Activating mutations of the G protein genes have been associated with the development of several endocrine neoplasms. Such activating mutations, gip2, affecting the α-subunit of the Gαi2 protein were previously described ...
Isolation, in vitro study, and stem cell markers for type A spermatogonia in a Characiformes species
(2020-07-01)
The objective of this study was to establish a protocol for the characterization, isolation, and culture of type A spermatogonia using specific molecular markers for these cells in fish. To this end, adult Prochilodus ...
Estudio del daño del ADN espermático y su relación con la infertilidad masculina
(Universidad Nacional Mayor de San MarcosPE, 2020)
Trata de demostrar si existe una asociación entre el daño del ADN y la fertilidad del hombre. Para este propósito se incluyeron varones infértiles e fértiles, se evaluaron los parámetros seminales mediante lo establecido ...
Efeito da varicocele na capacitação espermática.
(Universidade Federal de São Paulo (UNIFESP), 2018-01-30)
Introduction: Varicocele is defined as an abnormal dilation of the testicular veins in the pampiniform plexus with retrograde blood flow in the internal spermatic veins. It is considered one of the main causes of male ...
Effects of scrotal insulation in Nellore bulls (Bos taurus indicus) on seminal quality and its relationship with in vitro fertilizing ability
(Elsevier B.V., 2008-12-01)
The objectives of this study were to assess the effects of induced testicular degeneration in Bos taurus indicus (Nellore) bulls on changes in seminal characteristics and fertilizing ability of sperm. Four Nellore bulls ...
Effects of scrotal insulation in Nellore bulls (Bos taurus indicus) on seminal quality and its relationship with in vitro fertilizing ability
(Elsevier B.V., 2008-12-01)
The objectives of this study were to assess the effects of induced testicular degeneration in Bos taurus indicus (Nellore) bulls on changes in seminal characteristics and fertilizing ability of sperm. Four Nellore bulls ...
Effects of scrotal insulation in Nellore bulls (Bos taurus indicus) on seminal quality and its relationship with in vitro fertilizing ability
(2008-01-01)
The objectives of this study were to assess the effects of induced testicular degeneration in Bos taurus indicus (Nellore) bulls on changes in seminal characteristics and fertilizing ability of sperm. Four Nellore bulls ...
Parámetros reproductivos de Hypsiboas punctatus (Schneider 1799) (Anura: Hylidae) en el extremo sur de su área de distribuciónReproductive parameters of Hypsiboas punctatus (Schneider 1799) (Anura: Hylidae) in the south limit of its distribution area
(Universidad Nacional Mayor de San Marcos. Facultad de Ciencias Biológicas, 2014-03)
Hypsiboas punctatus(Schneider 1799) posee una amplia distribución en Sudamérica, a lo largo de un gradiente ambiental y latitudinal (tropical/templado), por lo que las condiciones que enfrentan sus poblaciones difieren ...