1d) Sheepish about growth - it's looking black (7)
2d) Translator of DNA code, crucial in coils, about 1 billion (11,4)
5a) Student bends over in lounge (6)
7d) A wet oscular mush when sloshed?
16d) 21 Down recruited Philby? revealing (6)
Apology for no letters. All help really appreciated.