Fig. 5From: Combination of platelet-rich plasma and bone marrow mesenchymal stem cells enhances tendon–bone healing in a rabbit model of anterior cruciate ligament reconstructionReverse transcription–polymerase chain reaction evaluation of osteogenic gene mRNA expression. Asterisk indicates significant difference (p < 0.05) compared with gene expression levels of BMSCs co-cultured with or without platelet-rich plasma (PRP) a collagen I; b osteocalcin (OCN); c osteopontin (OPN)Back to article page