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:

…of cell populations treated either impairing expression or activity of DNA methyltransferase (Suzuki et al. 2002) or by enforcing constitutive expression of Dnmt1 in cells (Feltus et al. 2003) or of the CpG-specific bacterial DNA methyltransferase SssI in isolated nuclei (Fatemi et al. 2005).
Background