Histological examination of biopsy (surgical) material, group 1 (skin and subcutaneous formations (1 localization), muscle tissue, paranasal sinuses, tonsils (in tonsillitis), adenoids, epulides, hernial sacs, gallbladder, wound channel walls, fistulous tract tissue and granulations, vascular aneurysm, varicose veins, hemorrhoidal nodes, ovarian cysts, anal fissure, appendix)