3 ms·
For Parkinson's the odor comes from chemicals expressed by sebaceous glands. I didn't know this until reading your comment. It does seem weird that the skin is
by wahern 7y ago
For Parkinson's the odor comes from chemicals expressed by sebaceous glands.
I didn't know this until reading your comment. It does seem weird that the skin is so permeable, so I looked it up. At least in this case, it doesn't seem to have anything to do with permeable skin.
EDIT: It's mentioned in passing in the linked article: "For one experiment in Manchester, sebum samples were taken from the upper backs of test participants." Other sources are more clear about the relationship to sebaceous glands.
- jcims 7y agoWell pointed, thank you. I did some looking and it seems the 'dog sniffing ovarian cancer through the belly' hasn't been reproduced in any controlled study yet (that i could find). Could just be via breath/skin secretions/etc.
- jacobush 7y agoDogs can smell so tiny concentrations I'd be surprised to find out they could not smell ovarian cancer. Instead, the trick I imagine is to train them to care and alert a handler.
- 1_over_n 7y agoPigeons have been trained in pathology imaging for breast cancer https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0141357 https://journals.plos.org/plosone/article?id=10.1371/journal...
- exikyut 7y ago> ... The birds proved to have a remarkable ability to distinguish benign from malignant human breast histopathology after training with differential food reinforcement; even more importantly, the pigeons were able to generalize what they had learned when confronted with novel image sets. ... > ... However, when given a different (and for humans quite difficult) task—namely, classification of suspicious mammographic densities (masses)—the pigeons proved to be capable only of image memorization and were unable to successfully generalize when shown novel examples. ...