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:

‚Ä¶21 d under 10-hwhite light (120mmolm 2 s 1 of photosynthetic photon flux) on vertical agar plates containing half-strength MS medium, then transfered to half-strength MS plates, containing 125 mM Ni, and shoot tissue was harvested and assayed for TBARS as described previously (Murphy et al., 1999).
Method