City of Industry, 17835 Gale Ave, 91748. Stanton, 12540 Beach Blvd., 90680. Sacramento, 3360 El Camino Ave., 95821. San Fernando, 12920 Foothill Blvd., 91340. Connecticut. Manchester, 69 Pavilions Drive, 06042. Orange, 2 Boston Post Road, 06477. Florida. Fern Park, 355 FL-436, 32730. Lantana, 7233 N Seacrest Blvd., 33462. Tampa, 5135 S Dale Mabry Hwy., 33611. Georgia
a potent toxin formed and excreted by the bacterial cell and found free in the surrounding medium; exotoxins are the most poisonous substances known. They are protein in nature and heat labile, and are detoxified with retention of antigenicity by treatment with formaldehyde.
The Production of Toxins. Poisonous substances produced by microorganisms are called toxins; toxemia refers to the presence of toxins in the blood. The ability to produce toxins is called toxigenicity. Exotoxins are produced by bacteria (mostly gram-positive) and released into the surrounding medium.Exotoxins, not the bacteria, produce the disease symptoms.-B Toxins. Most exotoxins are A-B or type III toxins. A-B toxins consist of two polypeptides. The A polypeptide is the enzyme and the B polypeptide is a binding component. B binds to the cell, the complete toxin is taken into the cell, the two subunits separate, and the A subunit enzymatically kills the cell.