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  2. ABCmouse.com Early Learning Academy - Wikipedia

    en.wikipedia.org/wiki/ABCmouse.com_Early...

    ABCmouse.com is a digital education program for children ages 2–8, created by the edtech company Age of Learning, Inc. [2] [3] The program offers educational games, videos, puzzles, printables, and a library of regular and “read-aloud” children’s books, covering subjects including reading and language arts, math, science, health, social studies, music, and art.

  3. Hygiene hypothesis - Wikipedia

    en.wikipedia.org/wiki/Hygiene_hypothesis

    The idea of a link between parasite infection and immune disorders was first suggested in 1968 [13] before the advent of large scale DNA sequencing techniques.The original formulation of the hygiene hypothesis dates from 1989, when David Strachan proposed that lower incidence of infection in early childhood could be an explanation for the rise in allergic diseases such as asthma and hay fever ...

  4. Germ-free animal - Wikipedia

    en.wikipedia.org/wiki/Germ-free_animal

    This process uses a non-germ-free mother which is sacrificed and sterilized before the pups' birth. After the cesarean birth, the pups must then be transferred to a sterile incubator with a germ-free mother for feeding and growth. [9] [10] These methods are only required for the generation of a germ-free mouse line. Once a line is generated ...

  5. Germline development - Wikipedia

    en.wikipedia.org/wiki/Germline_development

    The germ plasm effectively turns off gene expression to render the genome of the cell inert. Cells expressing germ plasm become primordial germ cells (PGCs) which will then give rise to the gametes. The germ line development in mammals, on the other hand, occurs by induction and not by an endogenous germ plasm (see reference 6.).

  6. Germline - Wikipedia

    en.wikipedia.org/wiki/Germline

    Setting aside an isolated germ cell population early in embryogenesis might promote cooperation between the somatic cells of a complex multicellular organism. [16] Another recent theory suggests that early germline sequestration evolved to limit the accumulation of deleterious mutations in mitochondrial genes in complex organisms with high ...

  7. Germ theory of disease - Wikipedia

    en.wikipedia.org/wiki/Germ_theory_of_disease

    The germ theory of disease is the currently accepted scientific theory for many diseases. It states that microorganisms known as pathogens or "germs" can cause disease. These small organisms, which are too small to be seen without magnification, invade humans, other animals, and other living hosts. Their growth and reproduction within their ...

  8. Germ - Wikipedia

    en.wikipedia.org/wiki/Germ

    Germ (microorganism), an informal word for a pathogen; Germ cell, cell that gives rise to the gametes of an organism that reproduces sexually; Germ layer, a primary layer of cells that forms during embryonic development; Cereal germ, the reproductive part of a cereal grain; Tooth germ, an aggregation of cells that eventually forms a tooth

  9. Koch's postulates - Wikipedia

    en.wikipedia.org/wiki/Koch's_postulates

    Robert Hermann Koch (11 December 1843 – 27 May 1910) was a German physician who developed Koch's postulates. [1]Koch's postulates (/ k ɒ x / KOKH) [2] are four criteria designed to establish a causal relationship between a microbe and a disease.

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