An explant can refer to a piece of tissue or organ removed from a plant or animal, which is then used for organotypic culture or tissue culture. This technique allows for the maintenance of a near in vivo environment in the laboratory for a short duration of time, enabling researchers to study various biological processes and phenomena. Additionally, explant can also refer to the act of removing living tissue from an organism and placing it in a medium for tissue culture, as well as the tissue that is transferred.