the standards of endodontics have constantly been raised in the last 25 years by practitioners’ researches and their interest. most of the scientists believe the recent developments and the use of lasers as the most exciting achievement in endodontic treatment. nowadays, lasers are being used in endodontics to improve the prognosis of the root-filled teeth. the implement of suitable wavelengths...

In an effort to better understand genetic and cellular factors that influence innate immunity, we examined host and bacterial factors involved in the nonopsonic phagocytosis and killing of Escherichia coli K-12 by mouse macrophages. Unelicited (resident) peritoneal macrophages from five different mouse strains, BALB/c, C57BL/6, CD-1, C3H/HeJ, and C3H/HeN, were employed. Additional macrophage po...

A direct inhibitory effect of hydrocortisone on granulocyte chemotaxis has been demonstrated with an increasing inhibition between concentrations of 5 microgram to 12.5 microgram per ml. Washing the granulocytes after incubation with hydrocortisone did not reverse the inhibitory effect on chemotaxis indicating a direct cellular effect. Bacteriocidal capacity of the hydrocortisone treated cells ...