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, my sample has a medulla that is not consistent with human morphology to the best I can determine. There is a point along the shaft of these hairs where it is not amorphous and 1/3 the shaft diameter, it is closer to half the width of the hair with straight uniform margins. That is it's major difference from human hairs that I can tell. Wider medulla's like this are more common with animal hairs. Other human or ape features would be the even distribution of pigmentation in the cortex. Animal hairs generally have greater pigmentation concentrations near the medulla and lighter towards the cortex. The width (diameter) of the hairs are also very close to human for my sample. Sy, Iwas going to post some pictures of this, but never bothered to figure out how. Heres the problem, i can post pictures side by side of hairs through my scope, one would show amorphous with 1/3 the shaft diameter medula, and another with straight uniform margins and the medula diameter = 50 %. one with scales, the other without. heres the kicker! its the same hair, different locations on the shaft, and simply changing the focal plane can give me a photo of whatever combination of characteristics you would like! Thats why I see no real value for species ID (humans to BF) using hair morphology! On the other hand I can tell goat and cat, and some others, but I can come up with any combo you want using human hair! speaking of hair, lets play a game! 1. fill in this common expression well you are just going to have to grin and _ _ _ _ it! (4 letters) 2. what is the result of a well know british researchers test on the "prime" BF sample? _ _ _ _ ! like the hair photos, same word correctly answers both puzzles! How about just posting pics of the hairs you say tested human. My pics are in focus and focused on the center of the hair where you can see the medulla clearly. Show me one from a human that is focused on the medulla with an medullary index of .5. I can tell you that every bear hair I've seen had a celular vacuolated medulla, and mine just don't have that.