THE HUMAN CELLS OF SERTOLI. J] ; 



roils and secondary rodlets are or arc not always enclosed in 

 vacuoles. 



< e.;,,in aberrant cases need mention. In a single instance a 

 pair of secondary rod lets were found together xxith a rot! in a 

 penultimate spermatogonium FL. io),a precocious case of rodlet 

 formation; what the constricted acidophilic body in the cyto- 

 plasm of this cell mav be. ! do not know. Then in each ot t\\o 

 i rather late Sertoli cell-, in-tead of tin- general case of one 

 pair of -econdary rodlet-. two pair- \\ere found Figs. 44, 48); 

 the-e might have been produced from an unu-ually long primary 

 t, -IK h as tin- "in- -ho\\n in Fig. .>!. by the occurrence of a 

 .1- x'.ell as a longitudinal divi-ion. 



6. DlSCl --!M\ AMI CON< I.I SIGN. 



Il i- triiK -nrprising that no i Ix m >ii'Ji account ha- \ et ! 



n ..f tin- hum. in cells of S-rtoli; indeed, the -tndie- made so 

 far are rather hi-tol. i^ical ihan e\ t> ! rj.ic.il. 



\tleiition in t! il- was tir-l draxxn bv s r rt"li [865), \\ho 



(ailed them "cellule r.i mi In at i . " M.i-t \\riter- -iuce his time 

 haxe given them hi- name; but the term "follirle cell" ...iiied 



bv Valette St. George i- frenieinl\- employed. as \\ell a- the 



t e| 111 "foot cell " ( J. I'".. S. Mii'H'e , \\ llile \ . K bile I '7 1 e|l)p|o\ e(| 



t lie name -permatoblast , and I 'end.: : that of vegetative cell. 



The name lullidc cell is generally u-ed for the cell- compi-iir^ 

 the >permaii-iA>ts of iilMitebrate- and |.\\er xertebrate-, ami 

 thai "1 ^ei'ioli cell for the physiologically corre-pniident cell-, nt 

 mamnialiam test 



A- t" the -i netic relation- n| the Sertoli Cell- In the -erill cells 



proper the \\ritei- I. ill into -rmip-, \\hich \\'.tlde\er '06 ha- 

 de-ign.ited as the dtiali-t- and the moni.-t-. The tir-l of il, 



iid the t\\o kind- of cell- as of entirely diltCrent origin, the 

 -permaii'voni.i pi m eiliug from primordial germ cell- and the 

 cell- of ^ertoli from other element-. A- dna!i-t- are to be da--ed 

 \\ata-e. I', .:.|eleben, lieiida. \\'.llde\ er and Sieph.m. \Vata-e 

 '92) and Manleleben '07 . -m-ider t!:e ^ertoli cell- to be inier-ti- 

 tial ie-ii- cell- that haxe \\andered into ihe -eminiferoii- tubule-; 

 but liardeleben'- li-nre- are (jiiite indeci-i\e, and \\'aia-e. in his 

 x erx brief account of little over a page, drcxv hi- coiiclu-ion- from 



