Image by Sílvia Ferreira, Cristina Lopo and Eileen Gentleman via the Wellcome Collection. Depicts a single human stem cell embedded within a porous hydrogel matrix (false colour). News 17 August 2026 • 3 minutes read Stem cell research shows vape flavour could affect embryo development by Martha Simmonds Vanillin, a common flavouring used in vapes and e-cigarettes, may pose a risk to embryonic development if inhaled during pregnancy.....