Fig. 5.
A linearity study of immature NK cell colony formation from fetal thymocytes. 0.3 × 103, 1 × 103, and 3 × 103 of day 14 fetal thymocytes were cultured with IL-7, IL-15, and SF in methylcellulose and colonies were scored on day 14 of culture. Data represent mean ± SD of quadruplicate cultures.