What does MPZ stand for?

McPherson Strip Boats, Tabor City, NC - Manufacturer code for watercraft hull identification number (USCG)

Mid-Continent Petroleum - Stock exchange symbol (AD)

Missouri Pacific Railroad - Intermodal trailer symbol

Modified Protamine Zinc - Insulin

Monopolize - Telegraphy (PCTE)

Mount Pleasant, IA - Location identifier - FAA (FAAL)

Mpi - Language code (ETLW)

Myelin Protein, Zero (DMAA)