Plants
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🐄🥛 “The Milkmaid’s Covenant”: Linking Cowpox Immunity to SCN⁻ in Raw Milk
In 1796, Edward Jenner famously inoculated eight-year-old James Phipps with material from the cowpox lesions of dairymaid Sarah Nelmes. Phipps did not contract smallpox when later exposed, confirming Jenner’s hypothesis:… Read more.
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ASCUS (Formerly Theca)
This article is about the spore-bearing cell in fungi. For Atypical Squamous Cells of Undetermined Significance (ASCUS), see Bethesda system. For the Greek mythological giant, see Ascus (mythology). (pl. asci) a cell present in the fruiting body of ASCOMYCETE fungi in which the fusion of HAPLOID nuclei occurs during sexual reproduction. This is normally followed by MEIOSIS, giving rise to four haploid cells, after which MITOSIS produces eight ASCOSPORES. The precise arrangement of ascospores within the ascus enables the events at meiosis to be fully analysed (see TETRAD ANALYSIS). The asci are usually enclosed within an aggregation of hyphae termed an ASCOCARP, a number of different types being recognized, e.g. perithecium, cleistothecium, apothecium. (Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005) An ascus (from Ancient… Read more.
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Theca
In biology, a theca (pl.: thecae) is a sheath or a covering. Botany The typical anther is bilocular, i.e. it consists of two thecae. Each theca contains two microsporangia, also known as pollen sacs.… Read more.
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Xylotheque
A xylotheque or xylothek (from the Greek xylon for “wood” and theque meaning “repository”) is special form of herbarium that consists of a collection of authenticated wood specimens.[1] It is also known as a xylarium (from the Greek xylon for “wood” and Latin arium meaning “separate place”).… Read more.
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Marx SO, Reiken S, Hisamatsu Y, Gaburjakova M, Gaburjakova J, Yang YM, Rosemblit N, Marks AR. Phosphorylation-dependent regulation of ryanodine receptors: a novel role for leucine/isoleucine zippers. J Cell Biol. 2001 May 14;153(4):699-708. doi: 10.1083/jcb.153.4.699. PMID: 11352932; PMCID: PMC2192391.
Abstract Ryanodine receptors (RyRs), intracellular calcium release channels required for cardiac and skeletal muscle contraction, are macromolecular complexes that include kinases and phosphatases. Phosphorylation/dephosphorylation plays a key role in regulating… Read more.
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Perivitellins are egg proteins found in the perivitelline fluid of many gastropods
Perivitellins are multifunctional complexes providing the developing embryo with nutrition, protection from the environment, and defense against predators. Despite the central role perivitellins play in reproduction and development, there is… Read more.
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p-Phenylenediamine (PPD) is a derivative of aniline used in kevlar, hair dye and henna substitutions among other things, the derivatives of which are used in antiozonants among other horrors
p-Phenylenediamine (PPD) is an organic compound with the formula C6H4(NH2)2. This derivative of aniline is a white solid, but samples can darken due to air oxidation.It is mainly used as a component of engineering polymers and composites… Read more.
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