sentence: This has been proposed to occur during various processes , including the formation of Balbiani bodies , and can involve proteins and / or RNAs ( Boke et al ., 2016 ; Brangwynne et al ., 2009 ; Han et al ., 2012 ; Jain and Vale , 2017 ; Kato et al ., 2012 ; Patel et al ., 2015 ) .