They discovered that treatment with the peptides led to the production of a people of T cells that suppressed the proliferation of allergen-reactive T cells in vitro.. Cells that might be able to suppres cat allergies In a paper in this month’s premier open-access medical journal PLoS Medicine, Mark Larche and colleagues from Imperial College London describe a subset of cells that could be in a position to suppress cells that cause cat allergy. Identifying the T cells that suppress proliferation to allergens after immunotherapy.Excluding non-recurring items, adjusted operating income rose 12 % to $173 million, compared to $155 million in the prior year. Operating expenses totaled $298 million. Excluding non-recurring items, adjusted operating expenses were $286 million, a rise of 1 1 % over the last year period, primarily driven by operating expenditures from Rowa Technologies, which the firm acquired in August 2011. In addition, the business increased investments in study and development by 25 % during the quarter and benefited from ongoing cost-savings initiatives in administrative support functions. The business reported income from continuing procedures of $103 million, or $0.45 per diluted share.