Table 1 Erythroid precursor colony numbers (per 5×104 nucleated cells) in patient and control bone marrow samples and the effects of both neutral serum and maternal serum (containing anti‐M) at two dilutions.
| Subject | Type | Standard assay | +10% inert serum | +10% maternal serum | +1% maternal serum |
|---|---|---|---|---|---|
| Patient | MN | 39 | 43 | 10 (−74) | NT |
| Control 1 | MN | 46 | 44 | 30 (−35) | 44 |
| Control 2 | MN | 49 | 40 | 21 (−57) | 36 (−27) |
| Control 3 | MM | 63 | 73 | 32 (−49) | 43 (−32) |
| Control 4 | NN | 21 | 20 | 26 (+24) | 31 (+48) |
NT, not tested.
Figures in brackets indicate the percentage change from the value obtained with the standard assay, where this was >20%.