The anatomical record . Fig. 5 From testis of just hatched chick. A few interstitial cells in connec-tive tissue between seiiiiual tubules. X Fig. 6 Interstitial cells from testis in figure 5. X 950. 2M ALICE M. BORING AND RAYMOND PEARL V. niscrssioN riuTc aro several jiossiblc explanations for tlic connictiii^ re-sults of Mazzetti, des Cilleuls, Reeves, aiui tlie present cells are reported present and absent for male birdsof praetiealiy every age. Des Cilleuls says they first appearat thirty days, while the only birds in which the present au-thors lind them are just
The anatomical record . Fig. 5 From testis of just hatched chick. A few interstitial cells in connec-tive tissue between seiiiiual tubules. X Fig. 6 Interstitial cells from testis in figure 5. X 950. 2M ALICE M. BORING AND RAYMOND PEARL V. niscrssioN riuTc aro several jiossiblc explanations for tlic connictiii^ re-sults of Mazzetti, des Cilleuls, Reeves, aiui tlie present cells are reported present and absent for male birdsof praetiealiy every age. Des Cilleuls says they first appearat thirty days, while the only birds in which the present au-thors lind them are just-hatched chicks. Reeves finds tlieniat all ages, but most abundant at three and one-half and fivemonths. Mazzetti reports them in mature birds, liut says thatthey are rare. So they possibly may be present in male birdsof any ages, but are much more frequenltly absent, and are,therefore, not a necessary component of the testis , it must be emphasized that the only way to be sure ofinterstitial cells is to use a differential stain, and then one cannot fail to identify them. Neither Mazzetti nor des Cilleulsdid this. It is very
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectanatomy, bookyear1906
