Health, Healing & Hummingbirds

Stormont test – same as above, w/ further injection at same site 7 days later, an increase in skin thickness of 5 mm or more 24 hours after 2nd injection is a positive; cannot retest for 6 months. Comparative test – Avian and bovine TB are injected simultaneously into two separate sites on same side of neck and read 72 hours later. ................
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