Coldnix Soup, chicken-free cold-fighting soup

In Contact, Carl Sagan describes one of my favorite sci-fi inventions, Adnix:

... a module that, when a television commercial appeared, automatically muted the sound.

Like Adnix, my Coldnix Soup won't make the problem disappear, but it may keep it from annoying you. The core recipe comes from a vegetable-rich, homemade chicken soup used in the much-referenced study Chicken Soup Inhibits Chemotaxis In Vitro. The study says:

As it is likely that the clinical similarity of the diverse infectious processes that can result in “colds” is due to a shared inflammatory response, an effect of chicken soup in mitigating inflammation could account for its attested benefits.... All of the vegetables present in the soup and the chicken individually had inhibitory activity, although only the chicken lacked cytotoxic activity. Interestingly, the complete soup also lacked cytotoxic activity. Commercial soups varied greatly in their inhibitory activity.

Could it be that homemade chicken soup without the chicken would be even more helpful in relieving cold symptoms?

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