Blemishes are caused due to hormonal changes, hereditary factors, stress, lack of proper nourishment. When the pore is clogged by natural body oils, the pores can get infected by bacteria and develop into black heads or white heads. If you prick or squeeze the acne lesion it will lead to scars or minor blemishes.
Making the world better, one answer at a time. Endothelial and epethelilal cells are the two different cell types which sandwich together the tissue. On the blood side is the endothelial cells (endo, meaning inside), and on the outer side are the epethelial cells.or example the epethelial cell layer are the cells that coat the intetestine wall, and thus absorb nutrients and the the endothelial cells are the cells that face the blood,and release those nutrients into the blood.
Key Difference â Pili vs. Flagella Pili and flagella are two types of extracellular filaments, which are attached to the cellular membrane of most of the prokaryotes including bacteria and archaea. Pili and flagella are different from one another. A key difference that can be identified between the two stems from the function of these two extracellular filaments. Pili are mainly involved in adhesion, biofilm formation, and DNA exchange. Flagella mainly support rapid swimming motility.