In some cases the immunoreactivity of these proteins was intense and it was not always possible to discern which individual protein was immunoreactive.
In these cases, we have indicated that both proteins were immunoreactive and reported the overall intensity of immunoreactivity.
These data are also represented visually as a matrix of immunoreactive proteins, as shown in Fig. 3a, with the shading indicating the comparative intensity of the observed immunoreactivity for each spot, as measured by densitometry.