evidence: A blog shared on social media falsely claims that a document released by the US Food and Drug Administration (FDA) "confirms the presence of Graphene Oxide, a highly toxic and conductive substance, in the Pfizer [Covid-19] vaccine". [...] "Graphene oxide is included in a sentence on page 7 to describe, in part, the laboratory procedure pertaining to the study of the structural characterization of the SARS-CoV-2 spike protein using a specific type of microscope. Graphene oxide is a material to aid in the imaging of the protein. Graphene oxide is not an ingredient in the vaccine." [...] "Graphene oxide is not used in the manufacture of the Pfizer/BioNTech COVID-19 Vaccine. There is no graphene oxide used in the manufacturing process and there is none in the raw materials or the final vaccine product.