This invention relates to adjuvant formulations comprising various combinations of triterpenoids, sterols, immunomodulators, polymers, and Th2 stimulators; methods for making the adjuvant compositions; and the use of the adjuvant formulations in immunogenic and vaccine compositions with different antigens. This invention further relates to the use of the formulations in the treatment of animals.

The invention relates to a process for increasing the observed titer of a virus stock for the purpose of increasing the calculated log reduction (LRV) in virus clearance studies. A tissue culture or assay plate is seeded with an indicator cell line and titrated with a virus stock followed, by a centrifugation step for about 5 minutes to about 24 hours at a g-force ranging from about 50g to about 2400g, and at a temperature from about 4 C. to about 39 C. The resulting calculated virus titer after undergoing the centrifugation step is 10-fold higher than the virus titer would be if determined in the absence of the centrifuging step.

This invention relates to adjuvant formulations comprising various combinations of triterpenoids, sterols, immunomodulators, polymers, and Th2 stimulators; methods for making the adjuvant compositions; and the use of the adjuvant formulations in immunogenic and vaccine compositions with different antigens. This invention further relates to the use of the formulations in the treatment of animals.

The present invention relates to a stock solution (RLP Stock Solution) of mammalian cell-endogenous retrovirus like particles (RLP, a method of preparing a RLP stock solution, a kit containing a RLP stock solution, and a method of quantifying the amount of RLP removed from a solution. An RLP stock solution will contain a high concentration of RLP and an extremely low amount of any therapeutic proteins of interest. In some instances, an RLP stock solution will contain a very low amount of natural mammalian host cell protein (HCP) and DNA. The method of preparing a RLP stock solution will consist of the production of RLP during fermentation or cell culturing and the subsequent purification of RLP from fermentation or cell culture solution. The kit will comprise at least two containers. One container comprised of RLP stock solution and one comprised of PCR primers or one or more antibodies. The method of quantifying RLP comprises the steps of adding RLP stock solution to an in-process solution containing a recombinant therapeutic of interest, processing the resulting solution through a bioprocess purification technique, and then quantifying the amount of RLP removed.

The present invention discloses a digital-to-analog conversion apparatus having signal calibration mechanism. A DAC circuit includes conversion circuits to generate an output analog signal and an echo-canceling analog signal. An echo transmission circuit performs signal processing on an echo path to generate an echo signal. An echo calibration circuit includes odd and even calibration circuits to perform mapping according to offset tables and perform processing according to response coefficients on odd and even input parts of an input digital signal to generate odd and even calibration parts of an echo-canceling calibration signal. A calibration parameter calculation circuit generates offsets according to an error signal between the echo signal and the echo-canceling calibration signal and path information related to the echo calibration circuit. The echo calibration circuit makes the coefficients converge according to the error signal and pseudo noise transmission path information, and updates the offset tables according to the offset.

This invention relates to adjuvant formulations comprising various combinations of triterpenoids, sterols, immunomodulators, polymers, and Th2 stimulators; methods for making the adjuvant compositions; and the use of the adjuvant formulations in immunogenic and vaccine compositions with different antigens. This invention further relates to the use of the formulations in the treatment of animals.

This invention relates to adjuvant formulations comprising various combinations of triterpenoids, sterols, immunomodulators, polymers, and Th2 stimulators; methods for making the adjuvant compositions; and the use of the adjuvant formulations in immunogenic and vaccine compositions with different antigens. This invention further relates to the use of the formulations in the treatment of animals.

A cell for producing retroviral vectors comprising nucleic acid sequences encoding: i) gag-pol; ii) env; iii) the RNA genome of the retroviral vector; and iv) optionally rev, or a functional substitute thereof, wherein at least two nucleic acid sequences are located at the same genetic locus; and wherein the at least two nucleic acid sequences are in reverse and/or alternating orientations.

This invention relates to adjuvant formulations comprising various combinations of triterpenoids, sterols, immunomodulators, polymers, and Th2 stimulators; methods for making the adjuvant compositions; and the use of the adjuvant formulations in immunogenic and vaccine compositions with different antigens. This invention further relates to the use of the formulations in the treatment of animals.