Complex sentence: VLPs contain repetitive high density displays of viral surface proteins which present conformational viral epitopes that can elicit strong T cell and B cell immune res, since VLPs lack genetic material, they provide a safer alternative to attenuated viruses.
Split into simpler sentences: VLPs contain repetitive high density displays of viral surface proteins which present conformational viral epitopes that can elicit strong T cell and B cell immune responses. Additionally, since VLPs lack genetic material, they provide a safer alternative to attenuated viruses.