Now showing items 11-20 of 59
Stability and expression of bacterial genes in replicating geminivirus vectors in plants
Bacterial beta-glucuronidase (gus) and neomycin phosphotransferase (neo) genes were introduced into coat protein replacement vectors based on DNA A of tomato golden mosaic virus (TGMV). Recombinant gus and neo vectors up ...
The behaviour of tomato golden mosaic virus DNA in cultured cells isolated from systemically infected tobacco leaves
When callus tissue was cultured from leaf pieces taken from a Nicotiana tabacum cv. Xanthi nc. plant systemically infected with tomato golden mosaic virus (TGMV), TGMV-specific DNA persisted for up to 6 months in culture. ...
Vertical dispersal of plant pathogens by splashing. Part II : experimental study of the relationship between raindrop size and the maximum splash height
This paper describes a simple experimental test of the theoretical relationship between raindrop diameter and maximum splash height proposed by Walklate (1989). This relationship contains two empirical parameters to model ...
Geographical approach to international tourism
Dr S.J. Page of the Department of Geography, Christ Church College, Canterbury, reports on the proceedings of a conference organized by the International Geographical Union (IGU) Commission of Tourism and Leisure, 13-20 ...
A simple formulation of microtubule dynamics: quantitative implications of the dynamic instability of microtubule
A simple formulation of microtubule dynamic instability is presented, which is based on the experimental observations by T. Horio and H. Hotani of coexisting, interconverting growing and shrinking microtubules. Employing ...
Selective suprasensitivity to calcitonin-gene-related peptide in the hands in Raynaud's phenomenon
The effects of intravenous infusion of three vasodilators on skin blood flow were studied in eight patients with Raynaud's phenomenon and eight controls, matched for age and sex, by means of the non-invasive technique of ...
Organisation of keying skills : the effect of motor complexity and number of units
The psychological processes involved in initiating and executing a rapid sequence of movements were investigated. Subjects were required to read a sequence of digits, and then on presentation of a visual cue, key the whole ...
A Lateral Cap model of microtubule dynamic instability
The co-existence and interconversion of growing and shrinking microtubules have been termed ‘dynamic instability’, and have been directly observed to occur under a variety of conditions in vitro and in vivo. Previous ...