against E. coli bacterial strain. On the other hand, almost all
crude extracts did not show any activity against S. aureus at all
concentrations except ethyl acetate (2.00 mg/mL) and water (1.00
mg/mL). The small activity was obtained from both crude extracts
of ethyl acetate and water at the concentrations of 2.00 mg/mL and
1.00 mg/mL with the values of 7 and 4 mm. Similarly, P. aeruginosa
bacterial strain showed some activity at different concentrations of
the employed crude extracts from the stems of neem. Both hexane
and chloroform crude extracts at concentration of 0.25 mg/mL gave
the activity with the value of 6 mm. But butanol, methanol and
water crude extracts of stems at concentration of 2.00 mg/mL gave
the range of activity with the value of 7 mm (Table 1). However, all
crude extracts at all concentrations did not give any activity against
the P. vulgaris bacterial strain.