Our study investigated the behavioural responses of medicinal leech and rainbow trout at different ontogenetic levels under the effect of crude oil (CO) and heavy fuel oil (HFO), performed comparative analysis of the sensitivity of animal responses, evaluated the specificity of these responses, and determined “safe“ toxicant concentrations. Comparison of sensitivity of behavioural responses of ...

We show that the Leech lattice gives a sphere covering which is locally least dense among lattice coverings. We show that a similar result is false for the root lattice E8. For this we construct a less dense covering lattice whose Delone subdivision has a common refinement with the Delone subdivision of E8. The new lattice yields a sphere covering which is more than 12% less dense than the form...

We study a second example of the phenomenon studied in the article “The complex Lorentzian Leech lattice and the bimonster”. We find 14 reflections in the automorphism group of the the quaternionic Lorentzian Leech lattice L that form the Coxeter diagram given by the incidence graph of projective plane over F2. We prove that these 14 reflections generate the automorphism group of L. The investi...

Unlike mammals, the CNS of the medicinal leech can regenerate damaged neurites, thus restoring neural functions after lesion. We previously demonstrated that the injured leech nerve cord is able to mount an immune response promoting the regenerative processes. Indeed neurons and microglia express sensing receptors like Hm-TLR1, a leech TLR ortholog, associated with chemokine release in response...

1. Water-wave stimulation, which was previously shown to elicit swimming in intact leeches, can initiate swimming in a semi-intact leech preparation via activation of the sensillar movement receptors (SMRs), provided that 50 micron-serotonin is added to the physiological saline. 2. The neuronal responses resulting from near-field stimulation of the leech body wall with a vibrating probe were re...

The identifiable cells of leech embryos exhibit characteristic differences in the timing of cell division. To elucidate the mechanisms underlying these cell-specific differences in cell cycle timing, the leech cdc25 gene was isolated because Cdc25 phosphatase regulates the asynchronous cell divisions of postblastoderm Drosophila embryos. Examination of the distribution of cdc25 RNA and the zygo...

Controlling and improving neuronal cell migration and neurite outgrowth are critical elements of tissue engineering applications and development of artificial neuronal interfaces. To this end, a promising approach exploits nano/microstructured surfaces, which have been demonstrated to be capable of tuning neuronal differentiation, polarity, migration and neurite orientation. Here, we investigat...

Leech neurons in culture have provided novel insights into the steps in the formation of neurite outgrowth patterns, target recognition and synapse formation. Identified adult neurons from the central nervous system of the leech can be removed individually and plated in culture under well-controlled conditions, where they retain their characteristic physiological properties, grow neurites and f...

A 67-year-old myopic man presented to the Ophthalmology Department of a teaching hospital in the mountainous state of Sikkim with complaints of red eye, ocular discomfort, and sensation of something moving in his right eye that led to occasional visual blurring from the previous four days. His symptoms started after washing his face in a stream. Clinical diagnosis was a leech in the limbus of t...

I J. P. Adoul and M. Barth, “Nearest neighbor algorithm for spherical codes from the Leech lattice,” IEEE Trans. Inform. Theory, vol. 34, pt. 11, pp. 1188-1202, Sept. 1988. Y. Be’ery and B. Shahar, “VLSI Architectures for soft decoding of the Leech lattice and the Golay codes,” Proc. IEEE Int. Workshop on Microekctronics in Commun, Interlaken, Switzerland, Mar. 1991. Y. Be’ery, B. Shahar, and J...