Abstract
The inhibitory effect of sodium polyanethol sulfonate (0.05%) upon growth of N. meningitidis was neutralized by adding gelatin (1.2%) to the growth medium. The neutralizing effect was demonstrated in solid medium and in nutrient broth for blood cultures. The findings parallel those of Wilkins and West regarding gelatin neutralization of the inhibitory effect of sodium polyanethol sulfonate on Peptostreptococcus anaerobius.