Fig. 3From: Nitrogen deficiency impacts on leaf cell and tissue structure with consequences for senescence associated processes in Brassica napus Micrographs of cross sections from the two oldest leaves of Aviso genotype in both conditions. a control condition rank 0; b control condition rank −2; c N deficiency condition rank 0; d N deficiency condition rank −1. UE upper epidermis, PP palisade parenchyma, SP spongy parenchyma, LE lower epidermisBack to article page