bone chips studied in vitro disclosed staphylococci more commonly near the endosteal haversian portals than on the intervening endosteal surfaces ( mean +/- se , 280 +/- 75 vs. 12 +/- 3 per 2,500-micron 2 field ; p less than .002 by student 's t test ) .
C0262950
bone
C0222658
endosteal