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At micromolar concentrations this may be true. There is plenty of Pb to go around in the soil and in the air from private aviation for such a minor micronutrient. I also doubt elevating Pb levels in crops is at the top of many public health agendas.
Calmodulin needs calcium, not lead.
alt Hacker News
At micromolar concentrations this may be true. There is plenty of Pb to go around in the soil and in the air from private aviation for such a minor micronutrient. I also doubt elevating Pb levels in crops is at the top of many public health agendas.