BSGM dip opp as swing traders sell Conf call, Spring (former $MRK lead worldwide live viral vaccine franchise) talks vaccines, anti-virals, immunomodulators. Spring/Zeldis (former $CELG CMO)discuss why so confident in MMPD &amp;  why they brought it to $BSGM : https://t.co/I3hxFkbPZo