cork cambium,corktaint

题为"a xylem-produced peptide ptrcle20 inhibits vascular cambium
英国手工brooks cambium c17 复古单车座垫公路死飞座包 座包
brooks cambium c13 132 mm saddle
they are the vascular cambium and the cork cambium.
examples for primary meristems – protoderma, procambium and