For multiple allele selection use Alt or Meta Key
Warning will be dispalyed if
if no allele will be selected from both of classes
Selection of Alleles-
Single or multiple alleles can be selected from the list of 36 class I and 51 class II alleles. The user can also select all class I and Class II alleles through "Both" option in selection box.An example of selection of multiple alleles from both class I & II alleles is shown below