“Some have suggested that meteorites brought nitrogen to Earth, or that nitrogen was captured directly from the disk of gas that formed the sun. This is an interesting puzzle for future investigations,” Mandt said. Mandt and colleagues are eager to see whether their findings are supported by ...
preosteoblast expression of osterix, and/or osteoblast expression of osteocalcin attained by other types of surfaces of orthopedic implants when such other types of surfaces are brought in contact with bone or are brought in contact with mesenchymal stem cells, which contact may be in vitro, or ...