With Escherichia coli as representative materials,the image effects of Escherichia coli after being bathed with BPS and distilled-water were observed by using SEM.The conformations of the fixed and non-fixed samples were examined.The aired,warm-incubated and freezingly-evaporated bacilli were compared.The results indicated that water bathed sample was more clear than that with PBS,for water sweeped away the residues of fixing solution and PBS which left on and covered the surface of samples when dried.Altho...