CFR / 
Title 40
 / Part 174
 / 
Sec. 174.521 Neomycin phosphotransferase II; exemption from the requirement
Residues of the neomycin phosphotransferase II (NPTII) enzyme are exempted from the requirement of a tolerance in all food commodities when used as a plant-incorporated protectant inert ingredient.
[72 FR 20435, Apr. 25, 2007]