This document discusses plant cell culture and preservation techniques. It provides information on: - Growing plant cells, tissues, and organs in artificial media for research and production of products. - Techniques for maintaining and preserving plant cells including minimal growth at reduced temperatures, cryopreservation at liquid nitrogen temperatures, and various cryopreservation protocols like slow cooling, vitrification, and encapsulation-dehydration. - Assessing viability of cryopreserved plant cells through tests like FDA, TTC, and Evan's blue staining. Regeneration of plants from stored tissues or cells is the ultimate test of survival.