FIELDS G-l and G-Z 

 Columns 27 and 28 



that, if omitted, the total code line would be misleading. It is for this reason that Field G is provided 

 for recording any experimental state of the test organism . 



Specific Directions and Explanations 



1. Field G is related exclusively to Field E, NOT to Field J 



As explained more fully in the previous section, General Use of Field G, this field is used 

 exclusively for: 



A. Describing entries in Field E (or the organ or tissue [Fields H or I] of that entry in Field E), 

 usually test organisms, -- 



B. Describing conditions that, in a sense, are incidental in that they are not themselves 

 being specifically treated, and-- 



C. Indicating experimental treatment of the test organism (Field E) other than treatment with 

 the test compound and compound coded in Field D (Symbol Z only). 



2. Coding when presence of a tumor is incidental 



When a test organism, coded in Field E, has a spontaneous tumor and the information being 

 coded is unrelated to any response of the tumor to the test compound, the tumor's presence is merely 

 incidental and should be coded in Field G with Symbol 7, N, or p, but not with Symbol 5. (If the 

 incidental tumor is not spontaneous, but implanted, use Symbol S. ) 



3. Use of Field G-l or both Fields G-l and G-2 



When there is present only one experimental state, code this in Field G-l; when there are two 

 such conditions, code either of them in Field G-l and the remaining condition in Field G-2, except 

 that Symbol Z should always be coded in Field G-2. (See Division 17. ) 



4. Use of Field G (both Fields G-l and G-2) relative to Fields E, H-l, H-2, and I 



A. Field H-2 



In the description of Field H, it is explained that Field H-2 is used only to code an organ 

 that is not an organ specifically responding to the test compound. (An organ specifically responding 

 to the test compound is invariably coded in Field H- 1. ) This organ in Field H-2 may be an organ to 

 which the test compound was applied when application was not to an organ specifically responding to 

 the test compound (i. e. , when application was not to an organ coded in Field H-l). However, Field 

 H-2 is also used with Symbols and P (and infrequently with Symbols B, S, and T) of Field G in 

 describing those states of the test organism, organ, or tissue specifically responding to the test 

 compound. 



B. Fields E, H-l, and I 



Division 3 of the section on General Use has described basically the relationship between 

 Field G and Fields E, H-l, and I. Field G is used to describe (a) a state of the test organism or 

 (b) a state of an organ which responds specifically to the test compound (and is therefore coded in 

 Field H-l), or (c) a state of a tissue which responds specifically to the test compound (and is there- 

 fore coded in Field I)- 



Certain of the items of Field G are defined so that any one of them may represent a pretreat- 

 ment (and the experimental state) of the test organism OR a pretreatment specifically to the organ coded 

 in Field H-l OR to the tissue in Field I. This is particularly true of those pretreatments (experimental 

 states) coded by Symbols 1, 2, 3, 4, and M. For example, by coding Field G with Symbol 4 when 

 Fields H- 1 and I are coded, there is no indication thereby as to whether the organism as a whole was 



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