What is a characteristic of allografts?

Allografts are tissues that are transplanted from one individual to another of the same species. A key characteristic of allografts is that they may contain bone morphogenetic proteins (BMPs), which are naturally occurring proteins that play a critical role in bone formation and healing. The presence of these proteins in allografts is significant because they can enhance bone regeneration and facilitate the healing process in the recipient.

The other choices do not accurately describe allografts. They are not sourced from the same individual; rather, they come from a donor who may be a different person. Additionally, allografts can be obtained from various sources, not limited to intraoral sites. Finally, while the risk of disease transmission can be reduced through screening and processing, it is not entirely eliminated in the use of allografts, distinguishing them from autografts, which come from the same individual's body and carry no risk of disease transmission.