Presence (+) of a supernumerary tooth (mesial to the first molar) in Rsk mutant mice.
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N: normal pattern of 3 molars M1, M2, M3. (3) means the presence of only 3 molars but the size of the second one is bigger (most probably there is a supernumerary tooth ST in front of M1, and M3 is missing).
创建时间：
2015-12-02
