FS222, a tetravalent bispecific antibody targeting CD137 and PD-L1, is designed for optimal CD137 interactions resulting in potent T cell activation without toxicity
FS222
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request. ### Instruction: Identify all the mentioned drugs in the given text. Text may or may not contain drug. If they contain more than 1 drug, use ";" as delimiter and join them. ### Input: FS222, a tetravalent bispecific antibody targeting CD137 and PD-L1, is designed for optimal CD137 interactions resulting in potent T cell activation without toxicity ### Output: FS222