TY - RPRT TI - [Stimulation of embryonic rat cells in culture by calf serum. VII. Decrease of intracellular cAMP level not caused by leakage of the nucleotide into the culture medium (author's transl)]. AU - J Grimm AU - W Frank UR - https://pubmed.ncbi.nlm.nih.gov/4358755/ ID - 4358755 ER -