FIGURE 1. Liberation of Tg into culture media as function of time. Accumulation of Tg is markedly enhanced after stimulation by TSH. Curves are representative for primary cultures from human thyroid tissues. Dotted line marks amount of Tg measured in lysate of 1 million cells at time of inoculation. This culture was not included in set of cultures investigated for uptake of ²⁰¹Tl.

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