Alternative splicing is thought to be possible due to two polyadenylation sites, one appearing between the Cμ and Cδ, and the other 3' of Cδ (polyadenylation in the latter site would cause Cμ to be spliced away along with the intron).
Pénsase que o splicing alternativo é posible debido a que existen dous sitios de poliadenilación, un situado entre o Cμ e o Cδ, e o outro en dirección 3' do Cδ (a poliadenilación neste último sitio pode facer que o Cμ sexa eliminado xunto co intrón durante o splicing).