The primary function of the nucleolus is as the site of ribosome-subunit biogenesis in eukaryotic cells. The initial ribosomal RNA (rRNA) precursor is transcribed by RNA polymerase I and is ...
Chemokines are a large family of chemotactic cytokines that regulate immune-cell trafficking. The chemokines CC-chemokine ligand 19 (CCL19) and CCL21 are ligands for the CC-chemokine receptor 7 (CCR7) ...
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