. . "cambium"^^ . . "112345909"@en-us . . "113097338"^^ . . . . "a formative one-cell layer of tissue between xylem and phloem in most vascular plants that is responsible for secondary growth"@en-us . . . "109389743"@en-us . . . "13097338-n"^^ . "cambium"@en-us . . . "0"^^ . "0"^^ . .