Fig. 9From: Construction, expression, and in vitro assembly of virus-like particles of L1 protein of human papillomavirus type 52 in Escherichia coli BL21 DE3The TEM examination of assembled particles of L1-HPV52. The protein was incubated in the assembled buffer (pH 5.4) at 25°C for 30 min. Scale bars: 20–200 nmBack to article page