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:

…to expression in the fetus, Igf2 is expressed by the placenta (Constância et al. 2002) and mice lacking the placenta-specific Igf2 transcript show IUGRaswell as placentas that are small and have altered nutrient transport (Constância et al. 2002; Sibley et al. 2004; Sferruzzi-Perri et al. 2011).
Background