Abstract: Human calcium channel .alpha..sub.1 -, .alpha..sub.2 -, .beta.- and .gamma.-subunit encoding cDNAs, and related compositions and methods, are provided.

Abstract: DNA encoding human neuronal nicotinic acetylcholine receptor .alpha..sub.2 subunits, mammalian and amphibian cells containing said DNA, and methods for producing such subunits are provided. In addition, combinations of subunits (i.e., .alpha..sub.2, plus .alpha..sub.1, .alpha..sub.3, .alpha..sub.4, and/or .alpha..sub.7 subunits in combination with .beta..sub.2, .beta..sub.3 and/or .beta..sub.4 subunits) are provided.

Abstract: Isolated DNA encoding each of human calcium channel .alpha..sub.1 -, .alpha..sub.2 -, .beta.- and .gamma.-subunits, including subunits that arise as splice variants of primary transcripts, is provided. Cells and vectors containing the DNA and methods for identifying compounds that modulate the activity of human calcium channels are also provided.

Abstract: Combinations, called matrices with memories, of matrix materials with remotely addressable or remotely programmable recording devices that contain at least one data storage unit are provided. The matrix materials are those that are used in as supports in solid phase chemical and biochemical syntheses, immunoassays and hybridization reactions. The data storage units are preferably non-volatile antifuse memories. By virtue of this combination, molecules and biological particles, such as phage and viral particles and cells, that are in proximity or in physical contact with the matrix combination can be labeled by programming the memory with identifying information and can be identified by retrieving the stored information. Combinations of matrix materials, memories, and linked molecules and biological materials are also provided.

Abstract: A method of retrofit includes the steps of removing the pre-existing superstructure of the lift system. A hole is then cut in the encasement securing the upper portion of the pre-existing casing. Thereafter, all hydraulic fluid is drained. Thereafter, the pre-existing gland flange is removed. The old plunger is also removed. After the same has been accomplished, there is then provided a high pressure low volume hydraulic cylinder and associated hydraulic line, all of which is positioned within the casing of the pre-existing system. The bottom of the high pressure hydraulic cylinder is mechanically locked to the base of the pre-existing outer casing. A new pump and hydraulic lines are then installed. A new plunger is then added to the new hydraulic cylinder and, with it, an appropriate bearing and guide mechanism which uses the pre-existing casing as an outer guide means for the new plunger.

Abstract: Methods of use of compounds and compounds for the treatment of disorders characterized by the cerebral deposition of amyloid are provided. Among the compounds are those of formulae I and II: ##STR1## in which R.sub.1 is preferably 2-methyl propene, 2-butene, cyclohexyl or cyclohexylmethyl; R.sub.2, R.sub.4, and R.sub.8 are each independently methyl or ethyl; R.sub.3 is preferably iso-butyl or phenyl; R.sub.5 is preferably iso-butyl; R.sub.6 is H or methyl; R.sub.7 --(Q).sub.n is preferably benzyloxycarbonyl or acetyl; Q is preferably --C(O)--; R.sub.8 is preferbly iso-butyl; R.sub.A =--(T).sub.m --(D).sub.m --R.sub.1, is which T is preferably oxygen or carbon, and D is preferably a mono-unsaturated C.sub.3-4 alkenyl being more preferred; and X is preferably an .alpha.-ketoester or .alpha.-ketoamide.

Abstract: .alpha..sub.1 - and .alpha..sub.2 - protein subunits of voltage-dependent calcium channels are provided.

Abstract: Automated measurement apparatus and methods for automated drug screening and for studying ion channel and cell surface receptor activity are provided. The apparatus is designed to initiate and measure rapid or transient events, such as cell receptor and/or ion channel activity. The apparatus can effect measurements of transient reactions in or more samples in a multi-well container, initiate the reaction with reagent addition and measure a resulting attribute of the sample for a period of time. The apparatus is capable of substantially continuously measuring and recording data corresponding to the measured attribute before, during and after initiation of the reaction so that a time course of the rapid or transient event is determined. Automated drug screening methods and methods for studying receptor and ion channel activity using the apparatus are also provided. The drug screening assays identify compounds that activate, inhibit or potentiate cellular ion channel or receptor activity.