Macrophages are seen in -
Late inflammation
Early inflammation
Wound repair
Healing
Neutrophils predominate in the early phase of inflammation (the phase occurring within 24 hrs) whereas macrophages enter the area in the late phase of inflammation ie. after 24-48 hrs. Neutrophils remain predominant cells for up to 72 hrs, after which the macrophages take over as a predominant cell.
Lymphocytes and plasma cells are also seen along with macrophages in the acute inflammatory response.