| RefNo | HD/12/1/61 |
| Previous numbers | 93HD.64.1 |
| Level | Item |
| Title | R A O'Brien, Wellcome Physiological Research Laboratories, to Dale |
| Date | 11 December 1928 |
| Description | Enclosing the results of some tests of PD & Co serum [i e scarlet fever antitoxin] in parallel with that manufactured by Burroughs Wellcome |
| Extent | 1p |
| Format | Typescript |
| AccessStatus | Open |
| AccessConditions | OPEN - but with some restrictions |
| RelatedMaterial | See HD/12/1/62 for enclosure |
| RelatedRecord | HD/12/1/62 |