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Chromosome numbers of Costa Rican grasses
Chromosome counts are presented for 217 species of 103 genera of grasses from Costa Rica. Four of the genera and 90 of the species are reported for the first time. In addition, 26 counts differ from… Expand
Chromosome numbers, meiotic behavior, and notes on tropical American grasses (Gramineae)
Chromosome numbers and meiotic behavior are reported for 126 collections of grasses representing 50 genera and 111 species. First counts are given for the genera Leptothrium, n = 10, and Cryptochlo...
Chromosome numbers, meiotic behavior, and notes on some grasses from Central America and the West Indies
Chromosome numbers and meiotic behavior are reported for 99 collections of grasses representing 47 genera and 88 species. First chromosome counts are reported for the following 20 species: Aristida… Expand
Drug states as discriminative stimuli in a flavor-aversion learning experiment.
- S. Revusky, S. Coombes, R. Pohl
- Chemistry, Medicine
- Journal of comparative and physiological…
- 1 April 1982
Injection of poison into rats after they drank in the presence of stimulus compounds of a drug state and a flavor resulted in little stimulus control by the drug state. In Experiment 1, half of the… Expand
Chromosome numbers and notes on some Central American grasses
Chromosome numbers are reported for 94 collections of grasses representing 61 species and 27 genera. Meiosis was analyzed and irregularities were noted. The probable reproductive method is discussed… Expand
Agnes Chase's First Book of Grasses: The Structure of Grasses Explained for Beginners
Pharmacological generality of the Avfail effect.
The original Avfail (aversion failure) effect was a loss of the capacity of pentobarbital to produce conditioned saccharin aversions resulting from a history in which pentobarbital injections… Expand