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Wikenigma - an Encyclopaedia of Unknowns Wikenigma - an Encyclopaedia of the Unknown Science

Neural regeneration

It's known that neural tissue can routinely re-generate in several species. The subject is intensely researched because of its potential to re-grow neural tissue which has been damaged due to disease or injury (e.g. Parkinson's diseaseplugin-autotooltip__plain plugin-autotooltip_bigParkinson's disease

Also known as Parkinson disease, Parkinson's, idiopathic parkinsonism, primary parkinsonism, PD, or paralysis agitans - is a degenerative disorder of the central nervous system resulting from the death of dopamine-containing cells in the
and Multiple sclerosisplugin-autotooltip__plain plugin-autotooltip_bigMultiple sclerosis

Multiple sclerosis (MS) is a condition of the central nervous system in which the coating around nerve fibres (myelin) is damaged, causing a range of symptoms varying in severity.

"“The cause of MS is unknown; however, it is believed to occur as a …

There is currently no agreement as to whether new neural cells are generated in adult humans :

The numbers of neurons born in the human hippocampus remains controversial; some studies have reported that in adult humans about 700 new neurons are added in the hippocampus every day, while other studies show that adult hippocampal neurogenesis does not exist in humans, or, if it does, it is at undetectable levels.
Source : Wikipedia

Note: There is also debate about whether adult learning induces the growth of new brain cells. The idea has not as yet been proven or disproven.

Also see : Limb Regenerationplugin-autotooltip__plain plugin-autotooltip_bigLimb Regeneration

Many animals, notably salamanders, axolotls, starfish &etc are able to regrow limbs which have been lost to accidents or disease. Although mammals can regrow various tissues (notably skin, liver and tail tips) there is no capacity to regrow limbs etc.…

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