| Collection | GB 0231 University of Aberdeen, Special Collections |
| Level | Item |
| Ref No | UNIVERSITY 1437/2/3/25 |
| Title | Slide showing diagrammatical drawing of egg. |
| Date | Late 19th to early 20th century |
| Extent | 1 slide |
| Description | Slide shows black and white diagrammatical drawing of an egg.
Title below diagram reads 'Fig 13. The same operation as in Fig. 12, later. A descendant of the fertilised egg nucleus has passed the ligature into the other half of the egg. Both parts are separated by a furrow. (After Spemann, 1928.)'
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| Access Status | Open |
| Physical Description | cracked front pane on right side; mould on back pane |