evidence: One example of this is an Instagram post published on 3 March 2024. The post listed several substances supposedly present in childhood vaccines, including aluminum, mercury, formaldehyde, monosodium glutamate, cells, serums, viruses and fetal DNA. The caption claimed that these substances are "toxins injected into healthy babies". [...] Aborted fetal DNA fragments, monkey kidney cells, and fetal bovine serum [...] In 2010, a research team found pieces of DNA from the porcine circoviruses PCV-1 and PCV-2 in the rotavirus vaccines from Merck and GlaxoSmithKline. These fragments weren’t part of the vaccine, but the result of contamination of an enzyme from the pig pancreas used in the manufacturing process.