Biomedical subjects
Publications and source records attributed to O A Oni.
The bony callus was investigated by staining with the PAS and von Gieson techniques. The callus appeared to be composed of two adjoining but distinct types of bone. The birefringence observed in the periosteum and callus cartilage revealed different sized collagen fibres, each oriented perpendicularly to the long axis of the diaphysis.
Using a sensitive analytical method, the total alkaloid content of Datura innoxia cultivated in Ibadan is reported at different stages of growth. Furthermore, the total hyoscine content of D. inoxia has been shown to peak during the harmattan season and to be at its lowest in the rainy season in Ibadan. The diagnostic microscopic features of this little studied species is also described.