China's "pig semen eyedrop" could help deliver Alzheimer's treatment (scmp.com)

Researchers in China report that pig semen-derived exosomes engineered as eye drops can reach deep retinal tissue and may help drugs cross difficult biological barriers like the blood-brain barrier. The approach, originally developed for retinoblastoma, was published in Science Advances and a researcher at Australia’s University of Adelaide said it could potentially be adapted for conditions such as Alzheimer’s disease.