| Id |
Subject |
Object |
Predicate |
Lexical cue |
| TextSentencer_T52 |
0-209 |
Sentence |
denotes |
In certain other human tumor culture systems, prolonged cultivation may be necessary before antigenic and other changes, possibly indicative of the emergence of viruslike agents, can take place (Sabin, 1965) . |
| TextSentencer_T52 |
0-209 |
Sentence |
denotes |
In certain other human tumor culture systems, prolonged cultivation may be necessary before antigenic and other changes, possibly indicative of the emergence of viruslike agents, can take place (Sabin, 1965) . |
