Sometimes it takes darkness to see the light: pitfalls in the interpretation of cell proliferation markers (Ki-67 and PCNA).
Castilla C, McDonough P, Tumer G, Lambert PC, Lambert WC. Sometimes it takes darkness to see the light: pitfalls in the interpretation of cell proliferation markers (Ki-67 and PCNA). Skinmed. 2012 Mar-Apr; 10(2):90-2.