In a study of 35 horse-mouse heterohybridoma cell lines, synteny in th
e horse was found between LDHB, PEPB and IGF1 and between NP, MPI and
IDH2. A synteny between ADA and PEPC was also indicated. The loci for
horse immunoglobulin light chain (IgL) genes and for LDHA were indepen
dent.