The present invention relates to transgenic ornamental barbs, as well as methods of making such fish by in vitro fertilization techniques. Also disclosed are methods of establishing a population of such transgenic barbs and methods of providing them to the ornamental fish industry for the purpose of marketing.

Provided herein are humanized immunodeficient mouse comprising human myeloid cells and human lymphoid cells, wherein the human lymphoid cells comprise human B cells that produce circulating immunoglobulin (Ig), for example, physiological levels of human IgG, and wherein the mouse expresses a detectable level of human FLT3L protein and does not express a detectable level of mouse FLT3 protein.

Compositions and methods for modulation by upregulation (up modulation) and/or downregulation (down modulation) of mitophagy are described for the treatment of mitochondrial disorders including OPA-1 related disease and Single Large Scale Mitochondrial DNA Deletion (SLSMD). Also disclosed are a number of screening assays and gene targets having utility for the identification of agents which modulate the phenotype associated with such disorders.

The present disclosure relates to a transgenic non-human mammal (e.g., mouse) that expresses a common light chain, wherein the transgenic non-human mammal comprises a hybrid light chain locus from which a light chain having a human V joined to a mouse J is expressed. Also provided are methods of making a transgenic non-human mammal capable of expressing a common light chain.

The present invention relates to transgenic ornamental fish, as well as methods of making such fish by in vitro fertilization techniques. Also disclosed are methods of establishing a population of such transgenic fish and methods of providing them to the ornamental fish industry for the purpose of marketing.