Dexamethasone, Prostaglandin A, and Retinoic Acid Modulation of Murine and Human Melanoma Cells Grown in Soft Agar&lt;xref ref-type="fn" rid="FN2"&gt;2&lt;/xref&gt;&lt;xref ref-type="fn" rid="FN3"&gt;3&lt;/xref&gt;
Journal of the National Cancer Institute