Tehran University of Medical Sciences Acta Medica Iranica 0044-6025 0 3-4 1968 12 15 105 119 R. GHARAGOZLOO P. GHAVAMIAN 2015 09 28 1251 urincs were examined and III each case the three following criteria were studied 1_ Presence of pus cells in wet mount (4 or more HPF). 2_ Isolation of pathogenic bacteria  :J_ Presence of 10,000 or more bacteria per c.c. of urine 801 specimens were obtained from patients referred to the diagnastic Iaboratorv of Institute of Public Health Research. and 450 specimens were collected from healthy soldiers in view of obtaining an idea of colonial count in urine specimem from healthy individuals. Further colonial couht uf 112 specimen were neasured twice in six hours interval. This was done to show that delay in examination may give false positive result . Finally the etiological agents of infections were identified and antibiotic sensitivity of E. coli strains isolated were determined https://acta.tums.ac.ir/index.php/acta/article/view/4096 https://acta.tums.ac.ir/index.php/acta/article/download/4096/4071