bacterial isolates were isolated from tonsil surface, while 13 (44.8%) were isolated from tonsil crypts. The means and Standard deviation for all readings of ODs: 450/630nm were: 0.1842 ± 0.1164, 0.2155 ± 0.1353 for all study isolates (biofilm and non- biofilm producers) which was detected on tonsil surface and crypts, respectively, as shown in table (1)