FIELD L 

 Column 44 



H-2, and I are essentially the same as between Field G and Fields H-l, H-2, and I, the definition of 

 anatomical entries in Fields H-l, H-2, and I varies, depending on the coding in Field J: when a living 

 host is coded in Field J, Fields H-l, H-2, and I are used to code anatomical sites of the pathology in 

 Field E (i. e. , anatomical parts of the host ), rather than anatomical parts which respond specifically to 

 the test compound (i. e. , rather than anatomical parts of the entry in Field E). 



4. Significance of information about experimental states coded in Field L . (Read Division 4 of 

 the General Use of Field G, applying that discussion to Field L. ) 



Specific Directions and Explanations 



Note: In the following, reference need be made to the corresponding division of specific 

 directions and explanations for Field G ONLY when it is suggested to do so. 



1. Field L is related exclusively to Field J and to Fields H-l, H-2, and I THROUGH Field J 



2. Coding when presence of a tumor in the host is incidental 



When a host has a spontaneous tumor and the information being coded is unrelated to any 

 response of that tumor to the test compound, the tumor's presence is incidental and should be coded 

 in Field L with Symbol 7, N, or 0, not with Symbol 5. (If the incidental tumor is not spontaneous , 

 but implanted, use Symbol S. ) 



3. More than one experimental state of the host 



If more than one experimental state characterizes the host, only one can be coded (whichever 

 is the more significant, if a choice is possible). The other states must be described in the written 

 abstract portion of the field. 



4. Relationship of Field L to Fields J, H-l, H-2, and I 



Field H-2 : 



When Field J is coded with a host organism (any Field J symbols beginning with any of numbers 

 1 through 9 or letters A through R), Fields H-l and I are used only for coding the anatomical site of the 

 pathogen, non-infectious pathology, or tumor coded in Field E. Field H-2 is used to code any organ 

 other than the specific anatomical site of the pathology: an organ to which the test compound is admin- 

 istered (when it is not administered to the organ in Field H-l), for example, or an organ (other than 

 the organ in Field H-l) which is given special pretreatment or is in a special state as indicated by any 

 of certain entries in Field L. (See Division 5 below for a more complete explanation of the uses for 

 Field H-2. ) The point to be made here is that Field H-2 can be used with Symbol B, 0, P, or S of 

 Field L to describe those experimental states of the host organism in Field J. 



Fields J, H-l, and I : 



When Field J is coded with a host ORGANISM (which is the only occasion when Fields H-l, H-2, 

 or I relate directly to Field J rather than Field E), rather than a non-living host, Field L is used to 

 describe a state of the host organism as a whole (Field J), or of the anatomical site of the pathology in 

 Field E (Field H-l or I). Certain of the items of Field L have an ambiguity of reference to Fields J, H-l, 

 and I. (This is true also of items of Field G in their relationships to Fields E, H-l, and I and it is 

 discussed under Specific Directions and Explanations for Field G, Division 4. The coder should review 

 that explanation. ) Except for items coded by Symbols 5, 7, 9, A, F, G, H, I, K, L, 0, and P which 

 include in their definitions specific reference to Field J or H, reference must be made to the written 

 abstract of the Code Sheet to ascertain that the pretreatment (or experimental state) coded in Field L 

 was of the host organism as a whole in Field J, or particularly of the organ in Field H-l, or of the 

 tissue or cell in Field I. Actually, items 1, 2, 3, 4, and M of Field L are the ones for which it might 

 be most particularly useful to have a means of making distinctions of reference to Field J, H-l, or I. 



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