[word=extracellular] [tag=NNS] [tag=□]
[word=extracellular] [tag=NNS] [tag=JJ]
[word=extracellular] [tag=NNS] [tag=NNS]
Here it should be clarified that the polymorphonuclear leukocytes ( = neutrophils ) are mandatory to the host defense against extracellular bacteria such as H. influenzae , meningococci , and pneumococci .