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ACROSS
1 Sheer fitting with zip is OK? (8, 4)
7, 8 Oat nectar bee turned into pigment (4)
8 See 7 across (8)
9 Wild animals incubate alien egg, say (6)
10 Against crossing without a trace (6)
11 Not finishing off a vitamin shake (3)
12 Nanoscale electrical engineering installed in Troy, New York (5)
14 Heedless of the odds, pens a scary article (5)
16 Prompt treatment to suspend onset of rabies (3)
18 After top surgery, driver left covered in crusted wounds (6)
20 In Uppsala, Rydberg got…
