metaphloem

These cells began to devise, then developed into aloin cells through enlargement of volume and vacuolization with the differentiation of metaphloem and metaxylem.

在后生韧皮和木质发育成熟程中，这些细胞体积逐渐增大，并液泡化，发育成为大薄壁细胞（芦荟素细胞），位于筛管外侧。