ExoCargo is DrSignal Biotechnology's exosome drug loading and targeted delivery development service, helping clients encapsulate small-molecule drugs, nucleic acids or peptides into exosomes and apply surface targeting modifications. The service covers loading condition screening, encapsulation process development, in vitro release and stability validation through small-scale trial production, carried out in closed tubing and an ISO Class 7 environment, with batch-to-batch variation in loading efficiency and particle size distribution kept within 15%.

CellExpand is DrSignal Biotechnology's cell culture and scale-up expansion service, covering the full workflow from primary cell banking and medium optimization through closed bioreactor expansion to harvest and filling. The service runs in an ISO Class 7 cleanroom environment under a GMP quality system, with a single-batch expansion scale of up to 50 liters, while inline sensors monitor pH, dissolved oxygen and cell density in real time to ensure batch-to-batch consistency.