secondary cell wall formation stage of secondary xylem PO_GIT:447 A cell differentiation stage of secondary xylem (PO:0025469) that occurs during the interval between the onset of secondary wall biogenesis (GO:0009834) of the cells in a portion of secondary xylem (PO:0005848) and the beginning of a cell death stage of secondary xylem (PO:0025466). 二次木部の細胞壁二次壁形成段階 (Japanese, exact) PO:0025465 2012-03-14T02:07:50Z plant_structure_development_stage During this stage, secondary cell walls (GO:0009531) are being formed in a portion of secondary xylem tissue, preventing further expansion of the cells. This stage succeeds a cell expansion stage of secondary xylem (PO:0025464) and precedes a cell death stage of secondary xylem. estapa de formaci&#243n de la pared secundaria celular del xilema secundario (Spanish, exact) rwalls cell differentiation stage of secondary xylem