Figure 2: IIF using ME. In 2a, FITC conjugated IgE positive staining against some vessels and also against some inflammatory cells around the vessels (yellow staining) (white arrows). In 2b and 2c, IHC positive staining of some superficial and deep dermal vessels, respectively, utilizing anti-human IgM. In 2d, positive staining of cells to Complement/C1q (black arrows). In 2e, positive staining against the vessels around the sweat glands utilizing anti-human IgD (black arrows). In 2f. IIF on monkey esophagus displays positive staining using FITC conjugated anti-human IgA (green staining) (white arrow). In 2g through 2i, positive staining of some vessels using anti-human fibrinogen 2g (by IHC), and also in 2h and 2i (by IIF). In 2j through 2l, positive staining of several areas of the epidermis and dermis utilizing anti-human albumin.