Figure 3

Immunostaining of CEM-SS cells incubated with Bt18 parasporal protein. The binding of Bt18 parasporal protein on CEM-SS cells was detected using immunostaining as described in the methods section. (A)- CEM-SS cells without Bt18 (negative control); (B)- CEM-SS cells incubated with Bt18. (1000× magnification) (Arrow pointing at the brownish ring formation).