The Qira black sheep and the Hetian sheep are two local breeds in the Northwest of China,
which are characterized by high-fecundity and low-fecundity breed respectively. The …

Background Mitochondria are organelles that fulfill a fundamental role in cell bioenergetics,
as well as in other processes like cell signaling and death. Small non-coding RNAs …

Impaired spermatogenesis and male infertility are common manifestations associated with
mitochondrial diseases, yet the underlying mechanisms linking these conditions remain …

Although somatic cell nuclear transfer (SCNT) is a powerful tool for production of cloned
animals, SCNT embryos generally have low developmental competency and many …

The aim of this study was to evaluate if cytoplasmic transfer can improve fertilization and
embryo quality of women with oocytes of low quality. During ICSI, 10–15% of the cytoplasm …

An increasing number of studies have related the mitochondrial DNA (mtDNA) content to
embryo viability and transfer outcomes. However, previous studies have focused more on …

The syncytial groups of germ cells (germ-line cysts) forming in ovaries of clitellate annelids
are an attractive model to study mitochondrial stage-specific changes. Using transmission …

Background: Recently, as a delayed childbearing trend is emerging in modern women's
adulthood, diminished reproductive potential due to age-related changes is more prevalent …

Impaired spermatogenesis and male infertility are common manifestations of mitochondrial
diseases, but the underlying mechanisms are unclear. Here we show that mice deficient for …

Mitochondria change their morphology and distribution depending on the metabolism and
functional state of a cell. Here, we analyzed the mitochondria and selected structures in …