Results 21 to 30 of about 307,098 (359)

A genetic basis for a postmeiotic X versus Y chromosome intragenomic conflict in the mouse. [PDF]

open access: yes, 2012
Intragenomic conflicts arise when a genetic element favours its own transmission to the detriment of others. Conflicts over sex chromosome transmission are expected to have influenced genome structure, gene regulation, and speciation.
Affara, Nabeel A.   +5 more
core   +4 more sources

Genital endometriosis as a cause of female infertility

open access: yesНеонатологія, хірургія та перинатальна медицина, 2013
Cited data review of literature in relation to the role of external genital endometriosis in the structure of gynaecological morbidity in a reproductive period and tactician of treatment of the sterility associated with a genital endometriosis.
O.S. Zakharenko   +2 more
doaj   +1 more source

Reproductive Compatibility Within and Among Spruce Budworm (Lepidoptera: Tortricidae) Populations [PDF]

open access: yes, 2017
Spruce bud worm moths collected as larvae from two species of host trees in four populations were mated in single pairs in two years. In 1980 but not 1981, more of the intra-population matings than the inter-population matings were fertile.
Bauer, Leah S, Lorimer, Nancy
core   +3 more sources

Developing Triploid Maples

open access: yesHorticulturae, 2020
Maples are common street and shade trees throughout the temperate zone. They are widely used for their wide range of ornamental traits and adaptability, particularly to urban settings. Unfortunately, some species such as Acer tataricum ssp. ginnala (Amur
Ryan N. Contreras, Tyler C. Hoskins
doaj   +1 more source

Plastic responses of survival and fertility following heat stress in pupal and adult Drosophila virilis

open access: yesEcology and Evolution, 2021
The impact of rising global temperatures on survival and reproduction is putting many species at risk of extinction. In particular, it has recently been shown that thermal effects on reproduction, especially limits to male fertility, can underpin species
Benjamin S. Walsh   +5 more
doaj   +1 more source

All you need to know about equipment validation for sterility testing

open access: yesJournal of Clinical Microbiology
Product sterility testing requests are becoming increasingly common in clinical microbiology laboratories due to the rapid development of advanced therapies.
James E. T. Gebo   +4 more
doaj   +1 more source

HPV Infection Affects Human Sperm Functionality by Inhibition of Aquaporin-8

open access: yesCells, 2020
Human sperm cells express different aquaporins (AQPs), AQP3, 7, 8, 11, which are localized both in the plasma membrane and in intracellular structures. Besides cell volume regulation and end stage of cytoplasm removal during sperm maturation, the role of
Giorgia Pellavio   +9 more
doaj   +1 more source

Radiation sterilization [PDF]

open access: yesJournal of Clinical Pathology, 1961
The sterilization by radiation of disposable medical items has been investigated. Various vegetative and spore-bearing bacteria have been irradiated and results indicate that 2·5 Mrad can be recommended to give a high degree of sterility. Spores of B. pumilus (E.601) showed such resistance that it might be a suitable test organism for determining the ...
E M, DARMADY   +4 more
openaire   +2 more sources

Validated Methods for Removing Select Agent Samples from Biosafety Level 3 Laboratories

open access: yesEmerging Infectious Diseases, 2020
The Federal Select Agent Program dictates that all research entities in the United States must rigorously assess laboratory protocols to sterilize samples being removed from containment areas. We validated procedures using sterile filtration and methanol
Alexandria E. Kesterson   +3 more
doaj   +1 more source

Temporary nutrient deficiency - a difficult case for diagnosis and prognosis by plant analysis [PDF]

open access: yes, 2000
Plant analysis aims to either detect deficiency at the time of sampling (diagnosis) or predict its occurrence at a later stage of growth (prognosis). Its use is based on the presumption that the plant nutrient status will either be constant with plant ...
Bell, R.W.
core   +2 more sources

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