Figure 2From: Iron and iron/manganese ratio in forage from Icelandic sheep farms: relation to scrapieThe calculated mean iron/manganese ratios in forage samples from 47 scrapie-free, scrapie-prone and scrapie-afflicted farms. Vertical bars show the standard deviation. *significantly lower ratio than in samples from scrapie-afflicted farms (P < 0.001).Back to article page