Figure 1From: Effect of mesoporous silica under Neisseria meningitidis transformation process: environmental effects under meningococci transformation(a) SEM image of SBA-15 which evidence the presence of elongated, vermicular shaped particles 590 nm wide. TEM image of SBA-15, which shows a well-defined hexagonal arrangement of uniform pores when (b) the incident electron beam was parallel to the main axis of the mesopores and unidirectional channels, and (c) the electron beam was perpendicular to the channel axis.Back to article page