4: Experience a lack of oxygen, perhaps
5: It's marked with a slash
7: Like any number finishing with '9'
9: Truth ___ (interrogation drug)
12: They often clog the major arteries
15: Hazarding a guess: doctor who puts stomach muscles in pulleys?
28: Himalayan monasteries
30: Distinctive atmospheres
35: Szechuan sauce source
44: Logic circuit element
49: Gavel pounder's demand
59: Like cherries jubilee