39. Une technique modifiee pour la detection des phosphomonoesterases acide 

 et alcaline et de l'adenosine-triphosphatase dans les tissus embryonnaires. 



(General) 

 C. Marit & J. Milaire — Histochemie (in press) 



40. Nucleolar orthophosphate, silver-reducing component of nucleoli. 



C. J. Tandler — Biochim. Biophys. Acta 44, 536-542, 1960 (General) 



41. Higher resolution stripping emulsion for autoradiography, using isotopes 

 other than tritium (Experimental plate V 1042, Kodak Ltd., London). 



J. L. Sirlin — Exp. Cell Res. 18, 598-600, 1959 (General) 



42. The autogram method of detecting cathepsins (Benz) and its application 

 to small objects. (General) 



R. Wroblewski — Folia Biol. (Krakow), 1961 (in press) 



42a. Identification of haemoglobin by its catalase reaction with peroxide and 

 O-dianizidine. (Vertebrata) 



B. R. A. O'Brien — Stain Technol. 36, 57-61, 1961 



43. Microautographic investigation of catheptic activity during development, 

 metamorphosis and regeneration. (Amphibia) 



R. Wroblewski & A. Grzybek (Belka) — Folia Biol. (Krakow), 1961 (in 



press) 



44. Application of the periodic acid-Schiff technique to whole embryos. 



D. B. Meyer — Stain Technol. 35, 83-89, 1960 (Aves) 



45. Differential fluorescence in living eggs treated with acridine orange. 



(Mammalia) 



C. R. Austin & M. W. H. Bishop - Exp. Cell Res. 17, 35-43, 1959 



See also entry no. 37 



Biochemistry 



46. Extraction, hydrolysis and electrophoretic analysis of RNA from micro- 

 scopic tissue units (microphoresis). (General) 



J. E. Edstrom — J. Biophys. Biochem. Cytol. 8, 39-46, 1960 



47. A sensitive method for quantitative estimation of serotonin (5-hydroxy- 

 tryptamine) in embryonic tissues. (General) 



B. N. Manukhin & G. A. Buznikov — Sechenov Physiol. J. (U.S.S.R.) 46, 



1160-1163 



48. Immunologic assay for pituitary gonadotrophic hormones. (General) 



S. J. Segal, S. Hakim & L. Niu — Proc. 1st Int. Congr. Endocrinol, 1960, 



1093 



49. Separation des proteines embryonnaires par electrophorese sur acetate de 

 cellulose. (Amphibia) 



H. Denis — Nature 187, 62, 1960 



See also entries no. 36, 40 

 254 



