A 72 - second signal detected in 1977 generated brief excitement but was never heard again. (newsweek.com)
Though there is a tendency toward abrupt market plunges, the initial market losses in 1972 and 2007 were recovered over a period of several months before second signal emerged, followed by a major market decline. (hussmanfunds.com)
Beta - nano - crystals were used in vitro in cells to induce the NLRP3 pathway by activating the receptors second signal in the double signal pathway. (livecareer.com)