Effect of NO production by alveolar macrophages stimulated with different helminth antigens. Nonstimulated (), LPS-stimulated macrophages (LPS), cyst wall (CW), total extract (TE), hydatid fluid (HF), soluble laminated-layer (LL), E14t recombinant 14-3-3 protein (E14t), excretory-secretory adult (ESA), and somatic adult (SA), excretory-secretory larvae (ESL3), somatic larvae (SL3). Helminths are represented in different colours.
