The most serious is melanoma. Like all body tissues our skin is made up of cells: basal cells, squamous cells and melanocytes. Skin cancer types are named after the skin cell in which the cancer develops: basal cell carcinoma, squamous cell carcinoma and melanoma.
Pichilingue Harbour, La Paz, Baja California, Mexico. History. Although the city was officially founded in 1535, its area had been known by hunter and gatherer peoples since Neolithic times. Rock paintings and other artifacts dating as far back as 10,000 years ago attest to their presence in most regions of the Baja.
The Constitution of 1917 - Jorge GonzÃ¡lez Camarena. Courtesy of MIT. February 5th is a national holiday to commemorate the Constitution of 1917, the legal document drawn up to embody the ideals of the Mexican Revolution and which still governs our Republic today. The first Mexican Constitution was signed in ApatzingÃ¡n, MichoacÃ¡n, on October 22nd, 1814.