i hafta object to the phrase "unable to destroy".
in phagocytosis in the life of a monocyte, a white blood cell, namely, granuloma
indicates that it has migrated outside the blood stream to epithelial cells tissue
layer and is attempting to isolate an antigen (foreign particle), and when
observed under microscope it characteristics are of interest to pathology.
however more information is needed on what phagocytosis is occuring
or as to any success or failure.