The filamentous bacterium Corynebacterium matruchotii splitting into multiple cells at once, a rare kind of cell division called multiple fission. C. matruchotii is one of the most common bacteria ...

Lockjaw (trismus) is a painful condition that limits your ability to open your mouth all the way. It occurs when the muscles you use to chew spasm, meaning they can’t relax completely. The term ...