1. protein
2. nitrogen
3. alkaloid
4. pyridine
5. ammonite
6. mucin
7. phospholipid
8. urea
9. algin
10. azoted
11. cinnoline
12. ichthin
13. indoxyl
14. leucoline
15. phenanthridine
16. phrenosin
17. pyrroline
18. quinazol
19. thialdine
20. albumin
21. ammonia
22. ammonification
23. amyloid
24. hyaline
25. hydroxylamine
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26. keratin
27. nitrification
28. ptomaine
29. quinoline
30. xanthin
31. -ine
32. asparagine
33. azotemia
34. azotemic
35. azoturia
36. betaine
37. biuret
38. carnin
39. cerealin
40. cerebrin
41. cerebrose
42. chondrin
43. creatin
44. creatine
45. creatinin
46. cytosine
47. diastase
48. diisatogen
49. dioxindol
50. dipyridil
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51. diureide
52. ecgonine
53. echidnine
54. elastin
55. extractive
56. flavin
57. fuscin
58. genetic code
59. glutazine
60. glycocoll
61. glycoluril
62. glyoxime
63. guanine
64. hydrazine
65. hydrocarbostyril
66. hypoxanthin
67. indazol
68. indogen
69. indophenol
70. inogen
71. iridoline
72. isatogen
73. isonicotine
74. isonitroso-
75. isouric
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76. isuret
77. kephalin
78. kerasin
79. ketol
80. kynurenic
81. lantanuric
82. lecithin
83. leucin
84. leucoturic
85. lophine
86. melamine
87. melaniline
88. melanuric
89. monureid
90. mucedin
91. murexan
92. murexide
93. murexoin
94. mycomelic
95. nicotidine
96. nigraniline
97. nitrogenous base
98. nucleoside
99. nucleotide
100. osmazome
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