Boron nutrition of cultured tobacco BY-2 cells. I. Requirement for and intracellular localization of boron and selection of cells that tolerate low levels of boron. - Matoh, ,T.,.; Ishigaki, ,K.-I.,.; Mizutani, ,M.,.; Matsunaga, ,W.,.; and Takabe, ,K.. (Plant Cell Physiol., 1992)