Culture Period | CSF-1 (CFU) | GM-CSF (CFU) | Uninf. (CFU) |
---|
1 week | 56 | 41 | 0 |
1 month | 66 | 46 | 4 |
4 months | 51 | 50 | 3 |
6 months | 73 | — | — |
8 months | 42 | — | — |
10 months | 23 | — | — |
- TEC were derived from C3H-++ mice. CSF-1 and GM-CSF were measured by colony-stimulating assay as CFU per 105 bone marrow cells. Positive standard for the assay is MRL-lpr sera at 6 months of age, 53 ° 4 CFU. Culture period, period after retroviral infection; Uninf., retroviral uninfected TEC. Culture supernatants (1 ml/5 × 105 TEC) were collected 6 days after passage. All values are means of duplicate samples.