Mandela, the former president of the Republic of South Africa and Nobel Peace laureate, spent more than 40 yearsâ27 of them in prisonâas a central figure in the struggle against South Africaâs brutal and restrictive racial regime called apartheid.
meristem culture. (shoot-tip culture) The culture of excised meristems on suitable nutrient media under aseptic conditions. The stem apex is usually used though axillary meristems may also be taken.Often gibberellic acid must be added to the medium to promote normal growth into a plantlet.shoot-tip culture) The culture of excised meristems on suitable nutrient media under aseptic conditions. The stem apex is usually used though axillary meristems may also be taken. Often gibberellic acid must be added to the medium to promote normal growth into a plantlet.
meristem. (mÄr`istÄm') , a specialized section of plant tissue characterized by cell division and growth. Much of the mature plant's growth is provided by meristems. Apical meristems found at the tips of stems and roots increase the length of these sections.n one type of lateral meristem, called cambium, or vascular cambium, the cells divide and differentiate to form the conducting tissues of the plant, i.e., the wood wood,botanically, the xylem tissue that forms the bulk of the stem of a woody plant.