mortality/aging
• embryos that survive past early embryonic stages die within one day of birth
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• more than half of embryos fail to survive early stages of development
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cellular
• calcium transients evoked bycyclopiazonic acid acid, thapsigargin, or ionomycin are reduced compared to wild-type MEFs
• average peak amplitude of store-operated calcium entry is reduced by 20-30% compared to wild-type MEFs
• however, resting calcium levels are similar to wild-type MEFs
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• increase in endoplasmic reticulum stress-induced apoptosis in MEFs
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