Increased telomere size in sperm cells of mammals with long terminal (TTAGGG)n arrays. Mol Reprod Dev 1998; 51:98-104.Kozik A, Bradbury EM, Zalensky A (1998) Increased telomere size in sperm cells of mammals with long terminal (TTAGGG)n arrays. Mol Reprod Dev 51:98-104...
B. Pawłowski, in Encyclopedia of Body Image and Human Appearance, 2012 Introduction Body size in nature has very important ecological and social consequences. It is related to the number of potential predators, diet, metabolism, thermoregulation, and to all life history parameters of a species ...
Testicular canceroccurs when cells in the testicle divide abnormally and form a tumor. You may think you're too young to worry about it. But you're not, especially if you’re over the age of 14. Testicular cancer typically affects males between the ages of 14 and 35. And it's the mo...
Head length of spermatozoa was measured using semen of White Leghorn, Creeper, Connecticut Random Bred, Jungle Fowl, White Wyandotte, New Hampshire and Dark Cornish cocks. Significant differences in mean length were found between breeds, but also within the group of Dark Cornish cocks. Mean length...
Sperm whales prey on adult colossal squids, whereas pilot whales, elephant seals, albatrosses, and toothfishes prey on juveniles. Conservation status Because it lives across such a vast area of ocean and at depths not often visited by human beings, the colossal squid has rarely been observed ...
Large brains must thus result from mechanisms that allow the coordinated generation of larger populations of neuronal and glial cells during development. View chapterExplore book The Evolution of The Human Brain: Apes and Other Ancestors E. Bruner, in Evolution of Nervous Systems (Second Edition), ...
The immortal jellyfish is one of the smallest Cnidarians, and it is often compared to the size of the nail on a human little finger. The length and width of the bell (the translucent body of the medusa) in fully grown adults is approximately 4.5 mm (0.18 inches). An immortal jellyfish...
Sex-specific patterns of cerebral cortical lateralization have been documented consistently in both the human and animal brain. Male rats tend to exhibit pronounced right hemisphere dominance compared with females, while females typically exhibit more diffuse lateralization patterns and greater left hemisphere...
This includes acetylation at histone H3 lysine 9 (H3K9) and methylation at H3K4, which are marks of active chroma- tin, and trimethylation at H3K27, which is typical of silent chromatin. In most non-stem cells genes have either active or repressive marks, but not both. An unusual ...
A large proportion of tests are performed on pregnant women and donors of human cells, tissues, and cellular and tissue-based products, which will drive the market in the region during the forecast period. The US is responsible for the majority of HIV test sales in North America because of ...