Fig. 4From: Transcranial pulsed ultrasound facilitates brain uptake of laronidase in enzyme replacement therapy for Mucopolysaccharidosis type I diseasePlasma IDUA enzyme activity assay of MPS I mice. MPS I mice receiving laronidase 2.9Â mg/kg injection through the tail vein, the blood were collected for IDUA activity assay at different time points after injection.Back to article page