Fig. 4

Overview of proteases from haematophagous arthropods. The columns show proteases reported in ticks, arthropods from the class Arachnida (a) and also in the orders of the class Insecta: Diptera (Culicidae) (b) and Hemiptera (Reduviidae: Triatominae) (c). The colours used group the proteases according to their biological function as follows: orange, digestion; blue, haematophagy; green, immunity; and red, yolk formation