Asesoría Laboral, Fiscal y Contable

Luis Daoiz, 8 - local C     Morón de la Frontera (Sevilla)     CP 41530
Ry ago and aroused outrage when first announced as a skin cancer cure. The beginnings: chemosurgery in 1933, 23-year-old frederic edward mohs was a research assistant assigned to inject different chemicals into cancerous rat tissues to produce specific reactions. He discovered that one of these chemicals, a zinc chloride solution, could “fix” skin tissue for microscopic study — preserve it without changing the architectural structure of the cells. buy viagra 2 he combined zinc chloride solution with stibnite and sanguinaria canadensis to develop a cohesive paste. When he applied the paste, mohs found that he could excise the tissue without causing bleeding. free viagra trial new zealand He could then prepare frozen sections of the excised tissue, and placed them on slides to be viewed under the microscope. viagra as recreational use Thus began his groundwork for the technique that today bears his name. is viagra safe after expiration date In 1936, after training as a surgeon, dr. viagra pills Mohs began performing the procedure, initially dubbed “chemosurgery” (“chemo” referring to the zinc chloride paste), on human skin cancer patients. canada pharmacy viagra It was a scrupulous process that could take days. viagra for sale Once clinical examination revealed a potential cancer, he would  first apply dichloracetic acid to the area believed to be involved;3 this would allow him to scrape away the protein keratin from the epidermal  layer of the skin, so that the zinc chloride paste could penetrate the area. The paste would then be applied, fixing the tissue. is viagra safe after expiration date A protective dressing would be placed over the treated site to enhance penetration and absorption of the paste. When adequate fixation was achieved many hours later or by the next day,4 mohs would remove the dressing and, using a scalpel, would surgically excise a saucer-shaped layer of the fixed tissue. He cut the specimen into sections about 1 cm square in area and 2 mm thick, and sketched a corresponding map of the sections, keeping each section separate and numbered to indicate its location on the map. 3 he also painted the adjoining edges of the sections with different dyes to differentiate the superior edges from the inferior. Reference marks were also made on the original surgical site to show exactly where each color-coded section had originated. Thus, any further surgery that might be required would occur only in the part of the surgical site where a cancerous section had been found. cheap viagra Frozen sections were prepared of the undersides of each excised section, and they were mounted on slides and examined under the microscope. is viagra safe after expiration date Each slide was labeled to indicate the particular section’s position on the map. If sections showed no evidence of cancer, no further surgery would be required. However, if a section revealed ca. buy viagra cheap Tel. 95 585 22 31   Fax 95 585 49 85