\begin{tabular}{@{\extracolsep{5pt}} ccccc}
  \\[-1.8ex]\hline 
  \hline \\[-1.8ex] 
  Antigen & Fluorophore & Vendor & Catalog Number & Purpose \\
  \hline \\[-1.8ex]
  CD3 & APC-Fire & \bl{} & 34839 & Differentiation, Degranulation \\
  CD4 & PerCP-Cy5.5 & \bl{} & 344607 & Differentiation, Degranulation \\
  CCR7 & AF647 & \bd{} & 560816 & Differentiation \\
  CD62L & PE & \bd{} & 341012 & Differentiation \\
  CD107a & AF647 & \bd{} & 562622 & Degranulation \\
  \hline \\[-1.8ex]
\end{tabular} 