SAN DIEGO--(BUSINESS WIRE)---- $GOSS--Gossamer Bio, Inc. (Nasdaq: GOSS), a late-stage, clinical biopharmaceutical company focused on the development and commercialization of seralutinib for the treatment of pulmonary arterial hypertension (PAH) and pulmonary hypertension associated with interstitial lung disease (PH-ILD), today announced it has entered into an option agreement to acquire Respira Therapeutics (Respira) and its lead product candidate, RT234, an investigational inhaled vardenafil drypowder. ...