Efficiency of adult mouse spermatogonial stem cell colony formation under several culture conditions

Characterization of the factor in L-cell

Characterization of the factor in L-cell conditioned medium capable of stimulating colony formation by mouse marrow cells in culture

✍ P. E. Austin; E. A. McCulloch; J. E. Till 📂 Article 📅 1971 🏛 John Wiley and Sons 🌐 English ⚖ 817 KB

## Abstract Medium harvested from cultures of mouse L‐cells contains “conditioning factor activity” (CFA) that may be detected by its ability to stimulate colony formation by mouse marrow cells in culture. The active material has been characterized and appears to be a glycoprotein with properties s