FIELD L 

 Column 44 



THE HOST ORGANISM IS IN A SECONDARY HOST ORGANISM OR NON-UVING SECONDARY HOST, 

 described in the written abstract. If a plant is the host and is maintained in an artificial 

 medium or water, e. g. , instead of its usual soil, indicate it by use of Symbol T rather than 

 by Symbol 3. (Symbol T is never used to indicate that a specific organ or tissue [site of the 

 pathology] has been transplanted to a secondary host. ) 



U HOMOGENATE, BREI, OR CELL SUSPENSION OF AN ORGAN OR 



TISSUE OF THE HOST. 



V EXTRACT OF A TISSUE OR ORGAN OF THE HOST. 



W CULTURE OF A TISSUE OR ORGAN OF THE HOST. 



X SLICE OF A TISSUE OR ORGAN OF THE HOST. 



The organ or tissue of the 

 definitions of these symbols 

 is the organ or tissue speci- 

 fically the site of the 

 parasite, non-infectious 

 pathology, or tumor and 

 therefore is coded in 

 Field H-1 or I. 



HOST HAS PARTIAL RESISTANCE TO THE TEST ORGANISM due to previous exposure or due to 

 being a strain that has more resistance than other strains of the species. (Use Symbol G for 

 strains resistant to the test compound and Symbol J for individual host organisms made 

 resistant to the test compound. ) 



Second use of Field L (one symbol only): 



EXPERIMENTAL TREATMENT OF THE HOST OTHER THAN 

 WITH THE TEST COMPOUND OR SECONDARY COMPOUNDS 



ANY TREATMENT OF THE HOST (OR ORGAN, TISSUE, OR CELL SITE OF THE PATHOLOGY) 

 AGAINST THE PARASITE, NON-INFECTIOUS PATHOLOGY, OR TUMOR CODED IN FIELD E, 

 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 

 and administration of anti-toxins specific for the test organism, etc. To qualify for being 

 coded by Symbol Z, such treatment must be considered as in part responsible for the action 

 coded in Field T to the degree coded in Field Y. 



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