Microbiology The following is a B cell specific mitogen: A Concanavalin A (conA) B Lipopolysaccharide (LPS) C Pokeweed mitogen (PWM) D Phytohaemagglutinin (PHA) 💡 Explanation The following is a B cell specific mitogen: ✓ Correct Answer: B. Lipopolysaccharide (LPS)