Arthus reaction
(Science: dermatology, immunology) a localised inflammation due to injection of antigen into an animal that has a high level of circulating antibody against that antigen.
a haemorrhagic reaction with oedema occurs due to the destruction of small blood vessels by thrombi. It may occur, as in farmers lung, as a reaction to natural exposure to antigen.
Bryophytes (nonvascular plants) are a plant group characterized by lacking vascular tissues. They include the mosses, th..
Myelin sheath is essential for a faster conductivity of signals. Know more about this feature of some neurons in the Cen..
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The arthropods were assumed to be the first taxon of species to possess jointed limbs and exoskeleton, exhibit more adva..
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Plants protect themselves by releasing hydrogen peroxide to fight against fungal invasion. Another way is by secreting c..