Recombinant and native peptides and proteins of animal, bacterial and viral origin, total protein extracts from organs of Human, Rat, Mouse, Dog, Cat, Monkey, Rabbit, Sheep, Goat, Guinea Pig, Horse, Fish, Hamster, Bovine, etc., kits for protein extraction and purification, protein staining dyes, electrophoresis tanks, combs, precast gels, buffers, ladders, etc.; crude and purified lysates from human and animal tissues and organs, from plant tissues and rom various cell cultures.