the aim of this study was to examine whether the secreted fluid from the uterus influences the survival and fertilization capacity of fowl sperm in the hen oviduct. hens with either regular uterine fluid secretion or irregular uterine fluid secretion were artificially inseminated through the transfer of sperm into the uterus. twenty-four hours after  artificial insemination, 3 hens with regular...

The aim of this study was to examine whether the secreted fluid from the uterus influences the survival and fertilization capacity of fowl sperm in the hen oviduct. Hens with either regular uterine fluid secretion or irregular uterine fluid secretion were artificially inseminated through the transfer of sperm into the uterus. Twenty-four hours after  artificial insemination, 3 hens with regular...

Background: Chaste tree is a phytoestrogenic herb and has a long tradition as a herbal remedy and was used in ancient times as an aphrodisiac. This study was conducted to evaluate in vitro fertilization ability and cleavage rate of sperm in chaste tree essential oil treated male mice. Materials and Methods: In this study, 10 adult male mice were divided in to two groups: group 1 as control and ...

BACKGROUND Recent studies have identified that levonorgestrel administered orally in emergency contraception (LNG-EC) is only efficacious when taken before ovulation. However, the drug does not consistently prevent follicular rupture or impair sperm function. OBJECTIVE The present systematic review is performed to analyze and more precisely define the extent to which pre-fertilization mechani...

Introduction The creativity of human beings expresses itself in as many forms as there are human activities and artifacts — not only in the media of arts and language, but also in the choices people make for personal and social expression in everyday life. Where two or more spoken or written codes are widely known and used within one community, speakers and writers can draw on differences in th...

The mean volume of pollen grains and total pollen production varied both within and among plants of Erythronium grandiflorum. The second flowers of two-flowered plants tended to produce smaller and fewer grains than first flowers, but there was no overall relationship between mean pollen grain size and production per flower. I evaluated the effects of pollen size differences within and among pl...

introduction: the aim of this study was to evaluate the effect of sperm chromatin anomalies on fertilization outcome post icsi. material and methods: therefore along with semen parameters, cma3 staining for protamine deficiency, aniline blue staining for excessive histones, sds for sperm chromatin stability and sds+edta for ability of sperm to undergo decondensation were carried out on 55 semen...

We contribute to scholarly understanding of lawn fertilization behavior by formulating and testing models of fertilization and fertilization frequency that incorporate a wide range of human and structural influences. Specifically, we explore the impact of (a) structural/environmental aspects, (b) sociodemographics, and (c) attitudes and beliefs (informal norms, knowledge, environmental concerns...