A colony of bacteria will sometimes elbow out a competitor by producing poisonous proteins called " bacteriocins."
一群细菌有时会通过产生一种叫做“细菌素”的有毒蛋白质来对付其他细菌。
英语百科
Bacteriocin
Bacteriocins are proteinaceous toxins produced by bacteria to inhibit the growth of similar or closely related bacterial strain(s). They are similar to yeast and paramecium killing factors, and are structurally, functionally, and ecologically diverse. Applications of bacteriocins are being tested to assess their application as narrow-spectrum antibiotics.