: This image usually contains supporting data—like extra graphs, gel electrophoresis images , or microscopy findings —that provide evidence for a study but aren't central enough for the main text.

: There is a line of specialized writing materials from Doane Paper that uses unique grid-and-line patterns for drafting and note-taking.

Products - doane paper

: Mention it as "Supplementary Figure 1" or "Fig. S1" within parentheses.

: Provide a clear title and description of what the image shows (e.g., "Figure S1. Gating strategy for identification of lung myeloid cell populations").

To address your request, it seems you are referring to a file named in the context of writing a paper. In academic and scientific publishing, "s1.jpg" is frequently used as a label for Supplementary Figure 1 . Common Contexts for "s1.jpg"

: Some archival files, such as handwritten letters or signatures , are digitized with this filename. How to Cite "s1.jpg" in a Paper