Bp 3.4 was fractionated further into Bp 3.4.1-Bp 3.4.15 using HPLC, and combined to eleven fractions.
Bp 3.4 var þáttað frekar með HPLC, sem gaf fraktionir Bp 3.4.1-Bp 3.4.15, sem eftir sameiningu urðu ellefu fraktionir.