An X-ray CT apparatus includes a perfusion data acquisition unit, a perfusion parameter calculating unit and a perfusion parameter display unit. Methods for identifying modulators of hepatocyte growth, plasma cell differentiation andor T cell subset activity, using XBP-1-containing indicator compositions or XBP-1-deficient cells, are provided. The method is also provided a first electrode plate such as TaRuN layer that has good oxygen diffusion barrier, good thermal stability, and low resistivity, is deposited on the storage-node hole opening. The composition may further include lauric acid, d-limonene and luteolin.