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When probed with a toothpick, dead larvae are “ropey” and mucous-like. If dead larvae have dried down to scales, the scales adhere to the cell. Tongue present protruding forward. Look up American Foulbrood

When probed, dead larvae are watery and/or granular. The tough skin can form a sac containing grayish liquefied larval contents. If dead larvae have dried down to scales, the scales do not adhere to the comb cell. Scales often brittle and black. Look up Sacbrood