Figure 1From: Detection of human coronavirus strain HKU1 in a 2 years old girl with asthma exacerbation caused by acute pharyngitisEthidium bromide staining of 2% agarose gel showing RT-PCR product (443 bp) of human corona virus HKU1–specific primers. Lane M, size marker (100 bp); lane 1 Negative control RT-PCR mix; lane 2 HKU1; lane 3 OC43.Back to article page