( ( Phagocytosis ( is ( ( an ( important feature ) ) ( of ( ( cellular ( innate immunity ) ) ( performed ( by cells ) ) ) ) ) ) ) ( ( ( ( ( called ` ) phagocytes ) ' ) ( ( ( that ( engulf ( , ( or eat ) ) ) ) , ) ( ( pathogens or ) particles ) ) ) . ) )
(ROOT (SINV (S (NP (NNS Phagocytosis)) (VP (VBZ is) (NP (NP (DT an) (JJ important) (NN feature)) (PP (IN of) (NP (NP (JJ cellular) (NN innate) (NN immunity)) (VP (VBN performed) (PP (IN by) (NP (NNS cells))))))))) (VP (VBD called) (`` `) (NP (NNS phagocytes)) ('' ')) (NP (NP (DT that) (NN engulf) (, ,) (CC or) (NN eat)) (, ,) (NP (NP (NNS pathogens)) (CC or) (NP (NNS particles)))) (. .)))
Phagocytosis is an important feature of cellular innate immunity performed by cells called 'phagocytes' that engulf, or eat, pathogens or particles.
(ROOT (S (NP (NNS Phagocytosis)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (JJ cellular) (NN eating))))) (. .)))