Complex sentence: The actual pheromone is synthesized in the same region as venom, or other primary hormonal departments within the organism; often, trail pheromone synthesis occurs in the ventral venom gland, poison gland, Dufour's gland, sternal gland, or hindgut.
Split into simpler sentences: The actual pheromone is synthesized in the same region as venom, or other primary hormonal departments within the organism. Often, trail pheromone synthesis occurs in the ventral venom gland, poison gland, Dufour's gland, sternal gland, or hindgut.