| Elliott's mathematical life circulated round the twin foci of Oxford and London. |
| Metastatic foci were also seen in the mesenteric lymph nodes, pancreas, stomach, visceral pleura, and bone marrow. |
| Centrally within the larger foci of squamous metaplasia, necrosis may be seen. |
| The semimajor axes of an ellipse are the longest lines crossing the area covered by the ellipse, and including the two foci. |
| Well, he discovered, in the elliptical function, that the Sun was located at one of the two foci of the relevant ellipse. |
| If we are to achieve a full understanding of deviant behaviour, we must get these two foci of inquiry into balance. |
