| Dr Virginia Livingston-Wheeler worked with many distinguished scientists throughout her long career, including Dr Roy Allen, an expert microscopist and histologist. |
| So he needed a thin section, for much the same reason that the microscopist pares off a thin sliver of tissue for investigation. |
| Working separately, the trio overcame a presumed limit on optical enlargement, theorised in 1873 by microscopist Ernst Abbe. |
