Yes, a Half-Sliver template. The slivers DNA (for using a modern term), is so muteable and adaptable, that by injecting sliverblood into the bloodstream of for example an elf. Said elf would start to mutate over time to become part sliver. At the same time their brain structure would change to such a degree that the former elf would think as a sliver and not an elf. The psyche would be totally different. They would in essence become a sliver. And if they came close to a sliver hive, would most likely be 'adopted' into that hive.