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Across
1 Ge (9)
6 1895 discovery by Wilhelm Röntgen (1–4)
9 Distilling apparatus (7)
10 City in which the first nuclear reactor was built (7)
11 Willow (5)
12 Type of tissue transplant (4, 5)
13 Home to the Lucasian Chair of Mathematics (9)
15 Ω (5)
16 Puzzle in which pictures represent words (5)
18 Supply with O (9)
20 Subunit within a cell (9)
23 Head; top; peridium (in fungi) (5)
25 1958 sci-fi horror film (3, 4)…
