Sentences with phrase «reproductive cells aged»
Most mutations in C. elegans affect both life span and reproduction, which had led scientists to believe that body cells and female reproductive cells aged according to the same clock.
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At Key Stage 3 (age 11 to 13 +, Years 7 to 9) schools have to teach: that fertilisation in humans and flowering plants is the fusion of a male and a female cell; about the physical and emotional changes that take place during adolescence; about the human reproductive system, including the menstrual cycle and fertilization; how the foetus develops in the uterus, including the role of the placenta.
Even though the reproductive age for humans is around 15 — 45 years old, the precursor cells that go on to produce human eggs or sperm are formed much earlier, when the fertilized egg grows into a tiny ball of cells in the mother's womb.
Sperm and egg from skin cells eventually might be used for reproductive purposes, enabling parenthood at any age using tissue from either the living or dead.
reproductive aging, oocyte dysfunction, telomeres, meiosis, stem cells, oocytes, genome integrity, stem cell biology
JAX has particular strengths in research focused on understanding aging, behavior and addiction, computational biology, cancer, development and disease, gene expression, genetics and genomics, immunology and hematology, metabolism, microbiome, neuroscience, reproductive biology, statistical and population genetics, stem cells, systems biology, and translational medicine.
Aging can generally be defined as a progressive decline in the efficiency of biochemical and physiological processes after the reproductive phase of life.2 From one birthday to the next we are unaware of the fact that our cells, organs and bones are slowly losing some of their function.
In females of reproductive age, the most rapidly growing cells are the ovaries, so the hormonal environment is encouraging excessive growth of these cysts in the ovaries.