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Nairobi fly is the common name for two species of rove beetle in the genus Paederus, native to East Africa originating from Tanzania. [1] The beetles contain a corrosive substance known as pederin, which can cause chemical burns if it comes into contact with skin.
The common term, earwig, is derived from the Old English ēare, which means ' ear ', and wicga, which means ' insect ', or literally, ' beetle '. [2] Entomologists suggest that the origin of the name is a reference to the appearance of the hindwings, which are unique and distinctive among insects, and resemble a human ear when unfolded.
The timeline of human evolution outlines the major events in the evolutionary lineage of the modern human species, Homo sapiens, throughout the history of life, beginning some 4 billion years ago down to recent evolution within H. sapiens during and since the Last Glacial Period.
Synergists make pyrethrin more effective, allowing lower doses to be effective. Pyrethrins are effective insecticides because they selectively target insects rather than mammals due to higher insect nerve sensitivity, smaller insect body size, lower mammalian skin absorption, and more efficient mammalian hepatic metabolism. [21]
The symptoms range from a burning itch to a minor rash, from being lethal to simply being a deterrent. With humans, they can cause irritation to the eyes, nose, and skin, and more dangerously, the lungs and airways, if inhaled. In some cases, tarantula hairs have caused permanent damage to human eyes.
ipRGCs were only definitively detected ipRGCs in humans during landmark experiments in 2007 on rodless, coneless humans. [15] [16] As had been found in other mammals, the identity of the non-rod non-cone photoreceptor in humans was found to be a ganglion cell in the inner retina. The researchers had tracked down patients with rare diseases ...
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