Interstitial Cells of Cajal and Neural Structures in the Human Fetal Appendix.

Background/aims: The interstitial cells of Cajal (ICC) are located within and around the digestive tract's muscle layers. They function as intestinal muscle pacemakers and aid in the modification of enteric neurotransmission. The appendix's unique position requires an appropriate contraction pattern of its muscular wall to adequately evacuate its contents.

Morphometric characteristics of choroid plexus epithelial cells in cases with significantly different psammoma bodies' presence.

Objectives: Taking into the consideration the fact that psammoma bodies have never been observed in stroma of any other organ as aging change, the aim of our research was to prove some structural similarities of choroids plexus and tumors psammoma bodies, and their possible connection with choroids plexus epithelial cells atrophy.

Materials And Methods: We used 30 cadavers' right lateral ventricle central parts of choroid plexus as material. Tissue samples were routinely processed for the applied histochemical and immunohistochemical stainings.