Abstract:
A method of and apparatus for simultaneously and uniformly transferring micro quantities of liquid from a first plurality of separate cells to a second plurality of separate cells. The gel loading apparatus (20) comprises a vertical support plate (26), a pressure block (28) mounted on the support plate and defining a pressure block (28) mounted on the support plate and defining pressure chamber (30) therein, and a slidable pressure tray (32) engageable with an underside of the pressure block for closing the pressure chamber. A plurality of liquid conveying conduits (capillaries 34) have first ends (36) inside the pressure chamber (30) and second ends (38) outside the pressure chamber. The second ends (38) of the capillaries (34) are preferably arranged for insertion between the plates of glass (22, 24) and into destination wells (21).
Abstract:
A method for detecting the presence of a target nucleotide or sequence of nucleotides in a nucleic acid is disclosed. The method is comprised of forming an oligonucleotide labeled with two fluorophores on the nucleic acid target site. The doubly labeled oligonucleotide is formed by addition of a singly labeled dideoxynucleoside triphosphate to a singly labeled polynucleotide or by ligation of two singly labeled polynucleotides. Detection of fluorescence resonance energy transfer upon denaturation indicates the presence of the target. Kits are also provided. The method is particularly applicable to genotyping.
Abstract:
The present invention is directed to a method of producing a cereal plant cell or protoplast useful for regeneration of a water stress or salt stress tolerant cereal plant by transforming the cereal plant cell or protoplast with a nucleic acid encoding a late embryogenesis abundant protein. A transgenic cereal plant or cereal plant cell or protoplast transformed with a nucleic acid encoding a late embryogenesis abundant protein is also provided. An LEA protein gene, HVA1, from barley (Hordeum vulgare L.) was transformed into rice (Oryza sativa L.) plants. The resulting transgenic rice plants accumulate the HVA1 protein in both leaves and roots. Transgenic rice plants showed significantly increased tolerance to water stress (drought) and salt stress.
Abstract:
The invention relates to the use of pharmaceutically acceptable zinc chelating compounds for the manufacture of medicaments for the treatment of neurotoxic injury.
Abstract:
Disclosed in an Environmentally Limited Viability System (ELVS) for microorganisms based on differences between permissive and non-permissive environments. Viability of the microorganisms are limited to a permissive environment by specifically expressing one or more essential genes only in the permissive environment, and/or expressing one or more lethal genes only in the non-permissive environment. Temporary viability in a non-permissive environment can be achieved by temporarily expressing one or more essential genes in a non-permissive environment, and/or temporarily delaying expression of one or more lethal genes in the non-permissive environment. Environmentally Limited Viabilty Systems are also disclosed involving coordinate expression of a combination of required genes and lethal genes. Microorganisms containing an Environmentally Limited Viability System are useful for release into permissive and non-permissive environments. Temperature regulated Environmentally Limited Viability Systems are particularly suited for delivery of expression products, such as antigens, using recombinant avirulent Salmonella by limiting their growth to the warmer environment inside the host, or by allowing growth for only a limited time in the host.
Abstract:
A purified and isolated DNA sequence and the encoded mammary-specific protein, mammaglobin, are disclosed. Also disclosed are methods for the detecting breast cancer based upon the overexpression and secretion of mammaglobin by breast cancer cells. The methods detect and/or quantitate the presence of mammaglobin or the mRNA encoding mammaglobin.
Abstract:
A method is disclosed that comprises administering insulin-like growth factor-I (IGF-I) to a mammal so as to sustain its biological activity in the mammal comprising administering a therapeutically effective amount of IGF-I to the mammal to provide an exposure to IGF-I for a period of time that stimulates the maximum biological response in the mammal, then discontinuing said administration for a period of time equal to or less than the time period used for administration, and repeating this pattern of administration and discontinuance of administration for a period as long as necessary to achieve or maintain the desired biological response in the mammal.
Abstract:
A vernier magnetic recording head (30) comprises multiple read and write transducers. The write transducers (32, 34, 36, 38 and 40) are equally spaced a first distance apart and the read transducers (42, 44, 46, 48, 50 and 51) are equally spaced a second distance apart. The write transducers initially write a plurality of equally spaced servo tracks (52, 54, 56, 58 and 60) which can be subsequently tracked by the read transducers. The write transducers may then be used to successively write a plurality of data tracks (62, 64, 66, 68 and 70) to one side of each servo track. The read transducers are positioned relative to the write transducers such that one read transducer is always positioned to track a servo track while the write transducers are writing the data tracks, thereby positioning the data tracks equidistant and parallel to or concentric with the servo tracks. One read transducer is positioned to track a servo track as the head is positioned at an extreme so that read transducers read data from the furthest data tracks, and the head may be positioned to write an adjacent set of new servo tracks.
Abstract:
Disclosed are fibroblast growth factor (FGF) binding and FGF receptor activation, and a method of identifying small molecular weight compounds that interact with FGF to modulate its activity such as, e.g., activators and inhibitors. Illustrative small oligosaccharides, namely di- and tri-saccharides, are shown to be effective modulators of FGF binding and FGF receptor activation.