Where are Jack Kelly's nipples?

In MGM's similarly-themed "Prisoner of War," released the same year, hunky young actors such as Steve Forrest, Robert Horton, and John Lupton are shown all sweaty and stripped to their skivvies. A real "meat" parade. But in "The Bamboo Prison," despite the likes of Robert Francis, Jerome Courtland, and Jack Kelly, there's not a bare chest in sight. No nipples, no belly buttons, nothing. Those dirty Commies! Now they're trying to stamp out "beefcake!"