三级片视频播放,精品三级片在线观看,A级性爱视频,欧美+日韩+国产+无码+小说,亲子伦XX XX熟女,秋霞最新午夜伦伦A片黑狐,韩国理伦片漂亮的保拇,一边吃奶一边做边爱完整版,欧美放荡性护士videos

Goat Anti-Rabbit IgG （H+L）, F（ab'）2 Fragment is a type of secondary antibody fragment that is widely utilized in various immunological assays due to its specific characteristics. Derived from immunoglobulins of goats that have been immunized against rabbit IgG, this fragment consists of the antigen-binding regions （Fab'）2 of the antibody molecule, which includes both the heavy （H） and light （L） chains. The F（ab'）2 fragment is obtained by enzymatic digestion of the whole IgG molecule, specifically using pepsin, which cleaves the molecule into pieces while retaining the antigen-binding sites.