Hybridoma cells are

1. Nerve cells
2. Hybrid cells resulting from myeloma cells and B-cells
3. Only cells having oncogenes
4. Products of spore formation in bacteria

Hybridoma technology is a technology of forming hybrid cell lines (called hybridomas) by fusing an antibody-producing B cell with a myeloma (B cell cancer) cell that is selected for its ability to grow in tissue culture and for an absence of antibody chain synthesis. The antibodies produced by the hybridoma are all of a single specificity and are therefore monoclonal antibodies. So, the correct answer is option B.