Can be associated with uptake of metabolites through the circulation into organs like kidney, liver or placenta. Perhaps drives the selective transport of thyroid hormones and estrogens coupled to an outward glutamate gradient throughout the microvillous membrane in the placenta (PubMed:30343886). The transportation system, its electrogenicity and possible tissue-specific counterions https://trentonufnwe.blog2news.com/31627220/helping-the-others-realize-the-advantages-of-tiromel