These strains of V. cholerae cultured in basic cholate agar, nutrient agar slant and blood agar could produce brown pigment, so it was called non O1 V. cholerae pigmentogens.

• 因该菌在碱性胆盐琼脂、营养琼脂斜面和血琼脂上培育后能产生水溶性褐色色素，故命名为产色素非O1群霍乱弧菌