Estrogen receptor (ER) beta1 and ERbetacx/beta2 inhibit ERalpha function differently in breast cance

A pair of parallel fusible elements is sub-divided, or separated by points of reduced cross-section into two parallel strings of fusible element sections. The pair of fusible elements is supported by a support of electric insulating material including a portion arranged between the pair of fusible elements and extending in a direction longitudinally thereof. The support further includes transverse arms arranged to both sides of the portion of the support that extends in the direction of the pair of fusible elements. These transverse arms are planar and support said planar fusible element sections and consequently the pair of fusible elements. The arms sandwich the planar fusible element sections which are arranged between the arms. If fusible elements of the above kind are connected in parallel into an electric circuit, the fusible elements will fuse sequentially at low currents at one or more points thereof. This process is often referred-to as "triggering". To expedite arc extinction by gas-blast, gas-evolving materials are arranged at points where break formation is likely to occur. The gas-evolving materials are locked in position between the pair of fusible elements and said support therefor.