Biological Features o Aerobic, Gram*, Noncapsulated, rods ●Gray- black colonies on tellurite亚碲酸盐 medium Metachromatic granules Chinese-letter morphology in Gram stainBiological Features ⚫ Aerobic, Gram+ , Noncapsulated, rods ⚫ Gray-black colonies on tellurite亚碲酸盐medium ⚫ Metachromatic granules Chinese-letter morphology in Gram stain