In a letter dated 25/2/2019 this charity stated: “We do not fund any research that uses human embryos, nor do we support any organisations that do this type of research. In almost every case CDRF-funded research uses adult volunteers from TwinsUK: a large group of identical and non-identical twins. Our method of collecting information is either by questionnaire, buccal swabs, blood tests, urine samples and faecal swabs for DNA analysis of either the subject or the subject’s gut microbiome. In some smaller studies, such as genetic causes of skin melanoma, we have used volunteers who already have the disease.” [#AMRC#]