FIELD T-2 

 Columns 58, 59, 60, and 61 



1163 Epileptiform convulsion 



1164 Opisthotonos 



117 Shock, unspecified 15 



117 1 Shock, hemorrhagic. To code hemorrhage, 



use Symbol 87 1. 



1172 Shock, anaphylactic. To code sensiti- 



zation, use Symbol 58. To code the 

 anaphylactin-anaphylactogen combi- 

 nation itself, use Symbol 8A1. Use 

 Symbol 1172 to code the complex 

 reactions of the organism resulting 

 from the anaphylactin-anaphylactogen 

 combination and known as anaphylactic 

 shock. 



1173 Photosensitive reaction 

 9A1 Motor coordination 



12 Viability; ability to survive (resistance 



to death due to) environmental hazards 



to which the organism (coded in Field 



E), or the developmental stage of the 



organism (coded in Field F), is normally 



exposed; survival time, as a measure of 



viability described above. Note: Do 



not use Symbol 12 for an organism's 



ability to survive pathology (pathology 



in Field E and the host in Field J); 



instead use Symbol 1621, 1631, 1753, 16 



or 1754. See the Key discussion of 



Symbol 12. 161 



13 Reduction of the degree of arthropod 



infestation of living hosts, when 



general application is made to the host 



or hosts bearing the arthropod and the 



arthropod thereby receives the same 



application as the surface of the host. 



Use Symbol 131 or 132, according to 



the terms in which the results are 1611 



expressed. 



131 Reduction of the number of arthropods 



infesting a living host (one or many 

 infested host individuals treated). Use 

 Symbol 13 1 when results are expressed 

 in terms of a percentage of arthropods 

 affected. 



132 Reduction of the degree of arthropod 1612 



infestation of a living host (one or 

 many infested host individuals treated). 

 Use Symbol 132 when results are ex- 

 pressed in terms of the degree of the 

 host's relief from the infestation, rather 162 



than in terms of the number or percent- 

 age of arthropods disposed of. 



14 A biological state or process indicated 



by the coding of the general type of 

 action in Field T-3. (Use Symbol 14 

 only when the biological state or process 

 is of a nature that can not be expressed 

 as a single specific response, such as 

 repulsion or attraction to the test 

 compound and when the author describes 



the test compound effect only by a gen- 

 eral term of Field T-3. See the Key. ) 

 An unspecified process of the organ or 

 tissue coded in Field H-1 or I. (Use 

 Symbol 15 only when the author does 

 not state the biological process 

 responding more specifically than by 

 reference to an anatomical structure's 

 unspecified functions. See the Key. ) 



Symbols of the following two series, 16-- 

 and 17--, are used for coding effects on 

 any infectious or non-infectious pathol- 

 ogy coded in Field E, EXCLUDING: (1) 

 effects on tumors coded in Field E, for 

 which Symbols 44 through 47 are used, 

 (2) effects on infestation by any arthro - 

 pod , for which ordinarily only Symbol 131 

 or 132 is used, and (3) effects on any 

 pathogenic organism which is not on its 

 living hosts; effects on pathogens or any 



microorganism on a non-living host are 

 coded by symbols of the 18-- series. 



Exacerbation of (intensification of) the 

 pathological condition in Field E. 



Increase in numbers of individuals of the 

 pathogenic organism species coded in 

 Field E. (See Symbol 1611 for a maxi - 

 mum degree of increase of numbers and 

 Symbol 1612 for an increase In numbers 

 due to the test compound's causing a 

 reduction of resistance of the host to 

 the pathogen. ) 



Increase in number of individuals of the 

 pathogenic organism species to the 

 lethal level of the disease. Evaluation 

 in Field Y is to be based on the dose of 

 the compound needed or the time needed 

 for the compound to bring about death , 

 due to its influence in increasing the 

 number of pathogen individuals. 



Increase in number of individuals of the 

 pathogenic organism species due to the 

 test compound's causing a reduction of 

 resistance of the host to the pathogenic 

 organism. 



Acceleration of the progress of the dis- 

 ease (toward the normal peak of the 

 disease). 



Note: Use Symbol 162 only for the 

 exacerbation of diseases which are in 

 themselves ordinarily not fatal; if the 

 disease is also fatal in untreated con- 

 trols, code the acceleration as a de- 

 crease in survival time, Symbol 1621. 

 Acceleration of the progress of a non- 

 fatal disease (Symbol 162) must be eval- 

 uated by a criterion other than 12 or 57. 



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