FIELDS G-1 and G-2 

 Columns 27 and 28 



it can not be coded. In other words, Field H-2 is used for coding the implanted structure 

 (which differs from the structure in Field H-1) rather than for coding an organ, other than the 

 organ in Field H-1, which is a site of such a transplant. The latter should always be recorded 

 in the written abstract when the situation exists. If an organ or tissue is implanted as a 

 part of the treatment of the test organism and shares with the test compound responsibility for 

 the action coded in Field T-2, Symbol S can not be used; only Symbol Z indicates this situation. 



NORMAL ORGAN, TISSUE, OR CELL IS IMPLANTED IN ANOTHER INDIVIDUAL ORGANISM, ORGAN. 

 OR TISSUE. The implanted structure is specified in Field H-1 or I as the structure responding 

 to the test compound. {The organism, into which these normal organs, tissues, or cells are 

 transplanted, is not coded in Field J as a host, since it is not a host-parasite or host-pathology 

 relationship that is given treatment. ) If the structure into which the implant is made is an organ, 

 it can be coded in Field H-2, but if it is a tissue, it can not be coded in Field H-2 or I. 



U HOMOGENATE, BREI, OR CELL SUSPENSION OF AN ORGAN 



OR TISSUE OF THE TEST ORGANISM 



V EXTRACT OF A TISSUE OR ORGAN OF THE TEST ORGANISM 



W CULTURE OF A TISSUE OR ORGAN OF THE TEST ORGANISM 



X SLICE OF A TISSUE OR ORGAN OF THE TEST ORGANISM 



The organ or tissue of the 

 definitions of these symbols 

 is the organ or tissue speci- 

 fically responding to the 

 test compound and therefore 

 coded in Field H-1 or 

 Field I. 



Second use of Field G (one symbol only): 



EXPERIMENTAL TREATMENT OTHER THAN WITH 

 THE TEST COMPOUND OR SECONDARY COMPOUND 



ANY TREATMENT ( NOT PRE TREATMENT) OF THE TEST ORGANISM, ORGAN, TISSUE, OR CELL, 

 OTHER THAN TREATMENT WITH THE TEST COMPOUND (OR OTHER THAN TREATMENT WITH 

 THE TEST COMPOUND AND SECONDARY COMPOUND) AND ACCOMPANYING THE TREATMENT 

 WITH THE TEST COMPOUND (OR ACCOMPANYING THE TREATMENT WITH THE TEST COMPOUND 

 AND SECONDARY COMPOUND). Examples are radiation, thermal, and mechanical treatments. 

 To qualify for being coded by Symbol Z, such treatment must be considered as being in part 

 responsible for the action coded in Field T to the degree indicated in Field Y. Symbol Z is 

 coded in Field G-2 only. 



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