There are significant correlation between induction frequency of pollen callus and differentiation frequency of green plantlets.
花药愈伤组织诱导率与绿苗分化率具有显著的相关性。
This identified an unexpectedly high frequency of mutations involving genes that function as master regulators of normal B-cell development and differentiation.
他们确定了一个基因的意外高频突变，此基因是正常B细胞发生和分化的主要调节基因。
With this medium, soft, transparent callus can be induced from immature embryos of embryo selection or tissue and organ differentiation stages. The induction frequency was 2-6%.
以该配方诱导幼胚，处于胚胎选择阶段和组织与器官分化阶段的幼胚，能诱导出松软、晶莹透明的愈伤，诱导频率为2-6％。
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