Several biotechnology and pharmaceutical names posted notable gains in Tuesday's after-hours trading session, driven by corporate updates and investor enthusiasm around clinical and financial milestones.China SXT Pharmaceuticals, Inc. (SXTC) surged 17.40% to $0.12 after announcing the closing of a registered direct offering valued at about$10 million. Under the terms of the agreement, the company will sell 66,666,666 Class A ordinary shares, or pre-funded warrants in lieu thereof, at $0.15 per share to a ...