explants

/EH0 K S P L AH0 N T S/
noun
  1. 1

    Any portion taken from a plant or an animal that will be used to initiate a culture. It can be a portion of the shoot, or of the leaves, or even just some cells.

Source: https://en.wiktionary.org/wiki/explant, https://en.wiktionary.org/wiki/explants