The quotation comes from Scientists Extract Evidence of Smallpox from 17th Century Mummy Quotation: The child’s body had no such scarring, so the discovery surprised Hendrik Poinar, Director of the Ancient DNA Center at McMaster University in Ontario. “We were using these mummies as a good test to looking back in time for the potential sort of deep time travel with viruses," he said. "And so we tried to pull out all the viruses and we looked at the reads that we found and, lo and behold, there was variola – some reads of variola – and we thought, 'Oh, that can’t be.'” === Hi everyone! the bold sentence seems a little complicated to me. Does it mean "we were using these mummies to study the timeline of smallpox virus"?