different between cutin vs cutan

English

From cut(is) +? -in.

cutin (countable and uncountable, plural cutins)

(biochemistry) A waxy polymer of hydroxy acids that is the main constituent of plant cuticle.
- 2018, Damian Carrington, The Guardian, 16 April:
  The structure of the enzyme looked very similar to one evolved by many bacteria to break down cutin, a natural polymer used as a protective coating by plants.

cutan (countable and uncountable, plural cutans)

(biochemistry) A hydrocarbon polymer, of uncertain structure but thought to be similar to kerogen, found in some plants.
(soil science) An oriented deposit which can be composed of any of the component substances of the soil material.

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