Given the task definition and input, reply with output. Given an abstract, indicate which of the provided candidate titles (Option1 and Option2) best describes it (respond with the text of the title, not option1/2).

Abstract: We have developed a new cellulose membrane in which the active hydroxyl and carboxyl groups of the original cellulose fibers are masked with cationic synthetic polymers. The membrane was shown by in vitro and clinical tests to affect the activation of the complement system very little, and it retains the high dialysis efficiency, good tolerance to steam autoclave sterilization, and economical production cost characteristics of the original cellulose membrane. It thus appears that the new cellulose provides the optimum combination of qualities needed in a hemodialysis membrane.
Which is the apt title for the abstract? option1: Development of a regenerated cellulose non-complement activating membrane for hemodialysis. option2: Crusted scabies in a patient with acquired immunodeficiency syndrome [letter]
Development of a regenerated cellulose non-complement activating membrane for hemodialysis.