Figure 4.

shows signal of DNA in the region until 2000 cm^-1. DNA consist of three groups: phosphates, deoxyribose and four bases such as A (adenine), T (thymine), C (cytosine) and G (guanine). In our work, the bands could be assigned to 883/1098/1045 cm^-1 - O-P-O backbone; 1276 cm^-1 - C (cytosine); 1456 cm^-1- A (adenine);1602 cm^-1 - guanine (G) and 1670 cm^- - T (thymine). The bands of DNA donor M2 (a) and M6 (b) are in accordance with some authors [21,22]. The bands 2739-3421 cm^-1 are not assigned to DNA, it is assigned to the quartz substrate. In (c) and (d) it shows the action of the MWCNT under Neisseria meningitidis strain C2135 using as donor DNA the M2 (c) and M6 (d).