You will be presented with a citation segment from the section of a research paper. Classify the intent behind this citation by choosing from one of the following categories:

- Method: Cites the paper for its methodology or procedure.
- Background: Cites the paper to provide background information.
- Result: Cites the paper for its findings or results.

Your answer should be a single word from the following list of options: ["Method", "Background", "Result"]. Do not include any other text in your response.

Citation sentence:

It was previously reported that, under disease condition, the solubility of TDP-43 is changed and altered solubility is correlated with cytoplasmic translocation and aggregation of TDP-43 and disease progression.(17,31,32) To determine whether CVB3 infection affects TDP-43 solubility, cells were infected with CVB3 for 7 h and cellular proteins were extracted sequentially using RIPA and then urea buffers.
Background