part of develops_from mound tipped mound prestalk region of the tipped mound DDANAT:0000016 Dictyostelium_discoideum_anatomy Elongated protusion of the tipped mound located on top of the cell mass that contains pstA cells flanked by pstO cells (expressing ecmA from the proximal and the distal part of its promoter, respectively). PMID:10642783 PMID:2513127 apical tip of the tipped mound pst region of the tipped mound prestalk region