Grail's uphill battle for Medicare to cover its cancer screening test

To non-pathologists, the histology slide looked, as all histology slides do, like a sea of mottled lilac and burgundy. Oblong pink spots, like sprinkles on a cookie at a Barbie-themed birthday party, spotted the left side of the image.

To LLaVA 1.5, an open-source artificial intelligence mode, the cells looked like they were from the cheek. LLaVA-Med, a version of LLaVA trained on medical information, told researchers the cells were from breast tissue.

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“The image you’ve provided appears to be a histological slide of tissue stained with hematoxylin and eosin,” said GPT4 — technically correct, but rather unhelpful.

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