has part has part has_part characteristic of part of has modifier abnormal seminiferous tubule epithelium morphology abnormal Sertoli cell barrier morphology abnormal SCB morphology abnormal blood-testis barrier morphology MP:0020355 any structural anomaly of the physical barrier found between adjacent Sertoli cells within the seminiferous tubules; the sertoli cell barrier consists of several types of cellular junctions including tight junctions, gap junctions and adhesion junctions, and divides the seminiferous tubules into the basal and apical (adluminal) compartments abnormal BTB morphology morphology abnormal Sertoli cell barrier