Fig. 2

Representative ESEM images of control surfaces tested without bacterial inoculation and P. mirabilis biofilms formed at 4 h: a chitin and b stainless steel control surfaces. Clinical P. mirabilis biofilms formed on chitin c and stainless steel d. Environmental P. mirabilis biofilms formed on chitin e and stainless steel f. Details of original images a, b, c, d, e, and f are shown in the lower images a1, b1, c1, d1, e1, and f1, respectively