Fig. 3From: Proteins from toad’s parotoid macroglands: do they play a role in gland functioning and chemical defence?The mevalonate pathway in the cholesterol biosynthesis (according to Mazein et al. [27], modified). Blue arrows indicate synthesis processes, while purple arrows catalysis accelerated by enzymes. Question marks indicate uncertain processes. Enzymes (PMVK and IDI1) identified in this work in the extract from B. bufo parotoids are shown in boldBack to article page