Gamma Sigma Alpha and Order of Omega. Gamma radiation penetrates further through matter than alpha or beta radiation. It does this by binding to alpha and beta receptors. Gamma rays were first thought to be particles with mass, like alpha and beta rays. Epinephrine does this by its effects on alpha and beta receptors. Rap1 assists in breaking the constraint between the alpha and beta subunits of LFA-1. The public alpha and beta releases were well received. Phi Alpha and one fraternity, Alpha Phi Omega. Hatfield is an alumnus of Sigma Alpha Epsilon fraternity. ArenaNet conducted small closed alpha and beta tests in 2011. He was a member of the Sigma Alpha Epsilon fraternity. He also was a member of the Sigma Alpha Epsilon fraternity. He was an honorary member of the Sigma Alpha Epsilon fraternity. He was a member of Pi Kappa Alpha fraternity. She is a member of Alpha Kappa Alpha sorority.