This instruction describes a step in an experimental process, which includes one action, multiple parameters—including various reagents—and one output. 
Please help analyze the missing reagents of this instruction. I will provide a list of potential reagents. You need to help me analyze which of these reagents might be the ones omitted from the current instruction. 
Please note how many reagent parameters are missing from the current instruction. It is possible that some reagent parameters cannot be completed with the list provided. Please output only a comma-separated list of strings without any explanation.

[Examples]
Instruction: (action="add", reagent="", output="");
Potential reagent list: "RNA", "glycoblue"
Reagents: "glycoblue"

Instruction: (action="add", concentration="1:10 volume", reagent="", reagent="", output="");
Potential reagent list: "µMACS", "solution", "NaCl"
Reagents: "NaCl", "µMACS"

Instruction: (action="use", reagent="BamHI", reagent="XhoI", device="PCR amplification", reagent="", output="");
Potential reagent list: "agar", "food"
Reagents:

[Question]
Instruction: [Instruction]
Potential reagent list: [Input]
Reagents: