Complex sentence: Here they liberate a specialist bacterium, "Xenorhabdus innexi"; this causes sepsis in the host insect and its eventual death, but not before the nematode has passed through its various life cycle stages and further infective juveniles have developed.
Split into simpler sentences: Here they liberate a specialist bacterium, "Xenorhabdus innexi". This causes sepsis in the host insect and its eventual death, but not before the nematode has passed through its various life cycle stages and further infective juveniles have developed.