Quantification of macrophage aggregates in the liver of Mugil cephalus.

Macrophages are involved in the recycling, storage and detoxification of cellular debris/waste products and exogenous substances their presence is quite normal. An accumulation of these cells, however, can be the sign of an alteration. A quantification of the surface area occupied by macrophage aggregates (1.3 to 21.5%) in Mugil cephalus suggests a possible environmental stress for the specimens examined.