has part has part has_part characteristic of has modifier chief cell of parathyroid gland abnormal parathyroid gland morphology abnormal parathyroid gland chief cell morphology abnormal parathyroid gland principal cell morphology abnormal principal cell of parathyroid gland morphology any structural anomaly of an epithelial cell that are collectively arranged in wide, irregular interconnecting columns in the parathyroid gland, that is responsible for the synthesis and secretion of parathyroid hormone (PTH) abnormal chief cell morphology abnormal chief cell of parathyroid gland morphology abnormal parathyroid chief cell morphology abnormal parathyroid principal cell morphology MP:0013572 abnormal PTH secreting cell morphology abnormal parathyroid hormone secreting cell morphology morphology abnormal