. The American journal of roentgenology, radium therapy and nuclear medicine . --■ ,X ^^Hg), Fig. 16. Fig. 17. Fig. 16. Mouse 6107. A foot is shown with a slight abnormality associated with a hemorrhagic 17. Mouse 6047. Three legs are here represented with markedly deformed digits. The abnormalities areassociated with hemorrhagic lesions. being twisted somewhat in the manner ofthose shown in Figure 17. Figure 19 shows a ventral view of theposterior end of Mouse 7412. The rightnind foot is shown from the central side defined, the whole leg is badly distortedand twisted into the e
. The American journal of roentgenology, radium therapy and nuclear medicine . --■ ,X ^^Hg), Fig. 16. Fig. 17. Fig. 16. Mouse 6107. A foot is shown with a slight abnormality associated with a hemorrhagic 17. Mouse 6047. Three legs are here represented with markedly deformed digits. The abnormalities areassociated with hemorrhagic lesions. being twisted somewhat in the manner ofthose shown in Figure 17. Figure 19 shows a ventral view of theposterior end of Mouse 7412. The rightnind foot is shown from the central side defined, the whole leg is badly distortedand twisted into the extraordinary positionin which it is shown. Of course it is impos-sible to estimate on the basis of superficialappearance what the bone and joint con-. Fi< . 18. Fk;. II). Fig. 20. Fig. 18. Mouse 8869. Ilic abnormality in this Jimb is mainly a faulty position of tlic 19. Mouse 7412. A ventral view of the posterior portion of the body showing an abnormally retracted and deformed left 20. Mouse 8235. Posterior portion of body showing a marked twisting and deformity of a hind limb. and is normal. The left hind foot, howcxcr,is curled o\er toward the body and has novisible trace of digits. It is also almostcertain that there is ankylosis, and possibly ditions actually are in this case, but it seemscertain that they are markedly abnormal. The above descriptions, although imper-fcit, will ser\o to show that tiie abnormal Abnormality among the Descendants of X-Rayed Mice 983 leg condition is subject to wide breeding records shown in the variouspedigrees mentioned later will further showthat there are undoubtedly animals whichare genetically abnormal-footed, but whichsomatically appear normal under a gr
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