Our research project focuses on immune system evolution, particularly the physiological genome editing processes observed in the vertebrate adaptive immune systems. As part we aim elucidating the evolutionary origin of the physiological genome editing process, a water snail species, Biomphalaria glabrata, is used as a model organism. The immune effector molecule that the species possesses have been reported to undergo somatic diversification, which suggest the involvement of genome editing process. To achieve precise genome information for our specific snail strain, we aim de novo assembly of the genome of the invertebrate, in collaboration with NBIS team.