Figure 4C. [doi:10.1002/(SICI)1520-6408(1997)21:1<75::AID-DVG9>3.0.CO;2-5] Rancourt SL; Rancourt DE, "Murine subtilisin-like proteinase SPC6 is expressed during embryonic implantation, somitogenesis, and skeletal formation." Dev Genet (1997) 21: 75-81. [PMID:9291583]