Definition: Organisms or complex pharmaceutical substances, preparations, or agents of organic origin, usually obtained by biological methods or assay. Biological agents are differentiated from BIOLOGICAL FACTORS in that the latter are compounds with biological or physiological activity made by living organisms. (From Webster's 3d ed).
differentiate from BIOLOGICAL FACTORS; /ther use: coordinate with disease /drug ther
poractant alfa [ Allphar brand of poractant alfa,Chiesi brand of poractant alfa,Curosurf,Dey brand of poractant alfa,Nycomed brand of poractant alfa,Trinity brand of poractant alfa ] RN given refers to cpd with unknown MF; isolated from porcine lungs; contains approx 99% phospholipids and 1% hydrophobic low MW (<15,000) proteins
