Anonymous ID: a35b51 May 28, 2020, 10:58 a.m. No.9347599   🗄️.is 🔗kun   >>7988

>>9347508

Because they had previously been exposed to the original SARS virus, from where the Wuhan researchers presumably excised the receptor binding domain and then pasted it into what would become COVID-19 once released into the "wild."