shRNA necklace H | silver meta-catalog Hemoglobin is a tetrameric protein:

Hemoglobin is a tetrameric protein: two alpha and two beta globin subunits

The closed loop solves the end-replication problem

were first described by Constantin von Economo and Georg Koskinas in their 1925 cytoarchitectonic atlas of the human cortex

The silver is the working-day version

No other planet has rings with this scale or composition

shRNA necklace H | silver meta-catalog Hemoglobin is a tetrameric protein:shRNA necklace H sterling silver Small hairpin RNA folds back on itself into a tight loop. When delivered by viral vectors into cells, it is processed by Dicer into siRNA and loaded into RISC, silencing target genes on demand. It is the molecular tool that made functional genomics systematic and real. The Science Behind shRNA Short hairpin RNA (shRNA) is a synthetic RNA structure containing a loop that can be processed by endogenous RNA machinery.