ANTIBACTERIAL EFFECTS OF LICHEN SUBSTANCES. I. COMPARATIVE STUDIES OF VARIOUS LICHEN SUBSTANCES

L. on the Effects of Various Substances

IDENTIFICATION OF A MYCOBACTERIUM AND A BREVIBACTERIUM PRODUCING ANTIBACTERIAL SUBSTANCES

Two strains, HG104 and ASSO, were isolated Crom the soil of Tehran's suburbs. Taxonomic studies showed thatHG104 and AS50 belong to Mycobacterium spp. and Brevibacterium spp. respectively, which produce antibacterial substances with relatively high activity against some important clinical Gram-positive and Gramnegative bacteria

Antibacterial Substances Separated from Plants.

Interest is arising in the possible use of higher plants as the source of naturally occurring antibiotic substances. The use of higher plants in the treatment of disease is as old as the art of healing itself. Isaiah of Biblical times suggested that a plaster of figs be placed on boils as a treatment of this form of infection. Hyssop and cedarwood were used in the cleansing of lepers. The Orien...

Counteraction of the Inhibiting Effects of Various Substances on Nitella

When living cells of Nitella are first exposed to (1) phosphate buffer mixture, or (2) phosphoric acid, or (3) hydrochloric acid, or (4) sodium chloride, or (5) sodium borate, and are then placed in a solution of brilliant cresyl blue made up with a borate buffer mixture at pH 7.85, the rate of penetration of the dye into the vacuole is decreased as compared with the rate in the case of cells t...

Comparative Studies Concerning the Strengths of Œstrogenic Substances