Now showing items 41-50 of 356
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 ...
Ig isotype switching in B lymphocytes : A method for estimating isotype switch frequency in cloned B cell lymphomas
We have developed a method for enumerating the frequency of Ig isotype switching in clones of B cells. The method adapts Poisson statistics to analyze the distribution of amounts of switched isotype produced by multiple ...
Teacher behaviour: a determinant of student self esteem
This small scale piece of research was undertaken to establish whether there existed a relationship between teacher behaviour and the reported self esteem inventories of four students. Using a low inference category system ...
The effect of podophyllotoxin on microtubule dynamics
We have investigated the effects of podophyllotoxin on the dynamic properties of microtubules assembled from pure tubulin dimer. Excess podophyllotoxin causes the complete disassembly of microtubules, through formation of ...
The role of rain in dispersal of pathogen inoculum
The importance of rain in the dispersal of micro-organisms was first demon strated in the 1880s, in the classic studies of Pierre Miquel (Figure 1) on the microflora of the Pare Montsouris in Paris. Collected rainwater ...
Spectropolarimetry of the 3-micron ice feature in molecular clouds. II : GL 2591, GL 2136, W 33A and Elias 29 (Rho Ophiuchi dark cloud)
Spectropolarimetric observations in the 3-micron ice band are presented for the infrared sources GL 2591, GL 2136, W 33A and Elias 29 (Rho Ophiuchi dark cloud). Some continuum polarization measurements between 1.2 and 5.0 ...