Grupo Aval Acciones y Valores Aval Acciones y Valores S.A. Later that year, Grupo Aval introduced an Online banking platform, which was integrated within the Group's major banking subsidiaries, Banco de Bogotá, Banco de Occidente, Banco Popular and Banco AV Villas. This innovation allowed clients to either conduct financial transactions on the Internet or in real-time at anyone of the banks branch offices or automated teller machines. A major milestone occurred during 1999 when Grupo Aval listed their shares publicly on the Bolsa de Valores de Colombia (the Colombian stock exchange) for the first time in the company's history. The Group made a massive initial
Dioscorea mexicana caudex, bear heart-shaped leaves. "Dioscorea mexicana" ranges from the state of San Luis Potosí in northeastern Mexico south to Panama. It is notable for its production of diosgenin, which is a precursor for the synthesis of hormones such as progesterone. Russell Marker developed the extraction and manufacture of hormones from "D. mexicana" at Syntex. Later the Mexican barbasco trade focused instead on "Dioscorea composita" instead, as this variety has a higher diosgenin content. Dioscorea mexicana Dioscorea mexicana, Mexican yam or cabeza de negro is a species of yam in the genus "Dioscorea". "Dioscorea mexicana" is a caudiciform dioscorea having either