CHEMICAL CHANGES IN HUMAN BRAIN 



475 



TABLE 4 

 Brain stem: Constituents in percentage of fresh tissue 



Water 



Solids 



Phosphatids 



Cerebrosides 



Sulfatids 



Cholesterol 



Total lipins 



Total proteins 



Organic extractives. . . 

 Inorganic extractives . 



Total extractives 



Lipin sulphur 



Protein sulphur 



Neutral sulphur 



Inorganic sulphur 



Total sulphur 



Lipin phosphorus 



Protein phosphorus. . . 

 Organic phosphorus. . . 

 Inorganic phosphorus. 



Total phosphorus 



FETUS 



3 



MONTHS 



(13)1 



91.91 

 8.09 



1.04 

 0.00 

 0.16 

 0.58 



FETUS 



7 



MONTHS 



(12)1 



1.78 



3.77 



1.54 

 1.00 



2.54 



0.003 

 0.026 

 0.015 

 0.001 



0.045 



0.044 

 0.025 

 0.026 

 0.056 



0.151 



90.56 

 9.44 



1.24 

 0.00 

 0.27 

 0.97 



CHILD 



1 



MONTH 



(14)2 



2.48 



3.98 



1.77 

 1,21 



2.98 



0.005 

 0.028 

 0.018 

 0.002 



0.053 



0.054 

 0.009 

 0.028 

 0.062 



0.153 



86.15 

 13.85 



2.40 

 0.27 

 0.06 

 2.26 



4.99 



5.43 



2.37 

 1.06 



3.43 



0.001 



0.022 

 0.005 



0.094 

 0.019 

 0.035 

 0.083 



0.231 



CHILD 



3 



MONTHS 



(20) 



84.24 

 15.76 



(4.07) 

 0.17 

 0.71 

 2.11 



MONTHS 



(21)' 



7.06 



6.40 



1.35 

 0.95 



2.30 



0.014 

 0.037 

 0.011 

 0.002 



0.064 



0.172 

 0.011 

 0.019 

 0.068 



0.270 



82.71 

 17.29 



2.89 

 0.40 

 0.94 

 3.41 



7.65 



7.01 



1.64 

 1.00 



2.64 



0.019 

 0.047 

 0.016 

 0.002 



0.084 



0.131 

 0.011 

 0.029 

 0.074 



0.245 



ADULT 



21 

 YEARS 



(27) 



73.60 70.34 

 26.40 29.66 



ADULT 



35 



YEARS 



(18) 



ADUI/r 



67 



YEARS 



(26) 



6.03 

 (0.21) 

 1.97 

 7.52 



15.73 



8.29 



1.44 

 0.94 



2.38 



0.039 

 0.069 

 0.002 

 0.004 



0.114 



0.273 

 0.011 

 0.017 

 0.083 



0.384 



4.69 

 1.36 

 2.49 

 9.43 



17.97 



8.90 



1.71 

 1.10 



2.81 



0.050 

 0.062 

 0.007 

 0.005 



0.124 



0.231 

 0.015 

 0.055 

 0.059 



0.360 



76.26 

 23.74 



7.33 

 2.33 

 1.78 

 2.83 



14.27 



7.60 



0.95 

 0.93 



1.88 



0.036 

 0.069 

 0.009 

 0.002 



0.116 



0.317 

 0.011 

 0.035 

 0.058 



0.421 



1 See table 1. 



2 Brain stem and cerebellum analyzed together, because of small sample. 



