[word=extracellular] [tag=NNS] [□]
[word=extracellular] [tag=NNS] [□=□]
[word=extracellular] [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 .