Pop-science article? This is Nature, one of the most respected science journals, and they have linked to the full peer-reviewed paper in their journal. Besides

Pop-science article? This is Nature, one of the most respected science journals, and they have linked to the full peer-reviewed paper in their journal. Besides, in contrast to your background of 'someone who has some mates who are doctors who once kind-of described it to him', the journal article in Nature was actually written by 13 PHD's who specialise in immunology.