ABSTRACT
The glands are usually referred to as pigment glands because they appear as dark dots in leaves and stems and as yellow to orange dots on seeds and roots. Cottonseed is toxic to monogastric animals, such as humans, swine, poultry, fish, and rodents; the cause of this toxicity was associated with the lysigenous glands early in the 20th century. However, it was not until the 1940s that the major toxin was identified as gossypol and its structure determined.
