The Seminis, aka Petoseed, book on Tomato diseases, which I've had for a long time and is excellent and also sold by TGS, clearly describes and pictures both internal and external BER.
And several times since I've been posting online about tomatoes, which goes back to 1990, someone has posted a picture of internal BER at a message site.
There are no outward symptoms at all when it's internal BER.
Since TAMU uses mostly pictures from Petoseed perhaps internal BER is pictured and described there?
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Carolyn
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