A weighted rein refers to a rein that is heavier on one or both ends. Naturally weighted reins are cut from hides that are specifically chosen for their weights and thicknesses. No extra leather or additional materials are added to the them. Notice in the picture the difference in the thicknesses of the tail, center and bit ends of this pair of reins.
Mitomycin C is a potent DNA crosslinker. A single crosslink per genome has shown to be effective in killing bacteria. This is accomplished by reductive activation of mitomycin to form a mitosene, which reacts successively via N-alkylation of two DNA bases.
Antimycin (used to refer to all of the antimycin variants collectively) is an antibiotic that was found to be a potent inhibitor of fungal growth (hence the name), while most bacteria are unaffected Antimycin A1 was first isolated during the 1940âs, and its molecular structure determined a few years later.