FIELD F 

 Column 26 



SEX AND STAGE OF DEVELOPMENT OF THE TEST ORGANISM; 

 MISCELLANEOUS INFORMATION CONCERNING TUMORS 



Organization 



In this field, the IBM zone punches 12 and 11 (coded as Symbols * and #, respectively) have 

 been assigned special meanings, for which reason Symbols A through R (formed by the 12 or the 11 zone 

 punch variously combined with the numerical punches 1 through 9) are unavailable for assignment. 



Symbols S through Z (formed by using the final [0] IBM zone punch with the numerical punches) 

 have been used for coding certain tumor features. Thus, these symbols can not be used for stages of 

 development of a test organism. 



As for the several lists of developmental stages, the definitions are arranged and assigned to 

 Symbols 1 through 9 so that the youngest stage of development is represented by Symbol 1, followed by 

 a step-wise progression to the oldest stage, assigned to Symbol 9. In the case of certain taxonomic 

 groups, especially the lower plant forms, analogy with stages of other groups is not possible, since 

 not only stages of one generation but of two or more generations needs distinction; however, an effort 

 has been made to be consistent in retaining the gamete as a beginning point in life cycles. (The 

 alternative would have been preparation of a list of stages for each generation of such an organism 

 which is not practical for the CBCC purposes. ) 



General Use 



The sex and stage of development of the test organism , at the time of treatment with the test 

 compound, is coded in this field by use of Symbols 1 through 9 and * and #. 



The sex and stage of development of host organisms is coded in Field K, rather than Field F. 



The stage of the test organism when observed , if older than the stage treated with the test 

 compound, is not coded (either in Field F or elsewhere). 



If Field E is not coded with an organism but with a non-infectious pathology or tumor, Field F 

 is not used except to code tumor information by use of Symbols S through Z, when appropriate. 



Specific Directions and Explanations 



1. Relationship between Fields F and E 



Field F is used only to describe entries in Field E, either sex and stage of development of a 

 test organism (Symbols * and # and 1 through 9) or information about a tumor coded in Field E (Symbols 

 S through Z). Sex and stage of development of a host is never coded in Field F, but only in Field K. 



2. Distinction between author's expressions of sex of organism used; coding of sex 



If the author designates that only one sex is used, it is important that that sex be coded in 

 Field F. 



If the author indicates that "either sex" is used, code neither * nor # in Field F. I. e. , do not 

 arbitrarily code * or #, because that procedure is reserved for indicating that a sex distinction was 

 made and has significance, and do not code both sexes in Field F, since if either sex satisfies the 

 requirements of the test, the distinction is unnecessary and it furthermore permits reserving coding of 

 both sexes for the following situation. 



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