Role of Isobar Components in the Low-Lying Levels in Light Nuclei

In this talk, I present the current status of the search for the evidence of isobar components in the low-lying levels of light nuclei. The on-going work on the pion electroproduction off the ³He nucleus will be described. Also arguments will be presented to show that the mirror symmetry breaking in the conjugate nuclei may have origins in isobar components of the wave functions.