Although many functions of human alveolar macrophages are altered compared with their precursor cell , the blood monocyte ( monocyte ) , the reason ( s ) for these functional changes have not been determined .
although many functions of human alveolar macrophages are altered compared with their precursor cell , the blood monocyte ( monocyte ) , the reason ( s ) for these functional changes have not been determined .
O O O O B-cell_type I-cell_type I-cell_type O O O O O B-cell_type I-cell_type O O B-cell_type I-cell_type O B-cell_type O O O O O O O O O O O O O O O O