WALTHAM, MA, April 23, 2026 (GLOBE NEWSWIRE) -- WALTHAM, MA - April 23, 2026 - - KACTUS has published a technical framework for engineering 2+1 and trispecific T-cell engager therapeutics, addressing structural scaffold challenges for drug discovery teams advancing beyond conventional bispecific formats. KACTUS, a leading recombinant protein manufacturer, has published a technical framework for engineering 2+1 and trispecific T-cell engager (TCE) therapeutics.