Give it up for the Nets, who performed a critical civic duty Wednesday night for their neighbors on he other side of the East River. After the last four games — really after the last four weeks or so — it didn’t seem possible that any prescription existed that could make the Knicks feel this good about themselves. 

Ah, but then the doctor ordered 48 milligrams of Nets, the basketball equivalent of Vitamin C, and injected it right into the bloodstream. 

Dr. Feelgood did his job. Sean Marks’ (Long) Island of Misfit Toys did the rest. 

Knicks 120, Nets 66. Biggest margin of victory in the Knicks’ 81-year history … and with room to spare. And the 19,812 witnesses to the carnage inside Madison Square Garden all said the same thing in unison: