Abstract: The present invention relates to the branches of Biotechnology and Medicine. It describes the use of therapeutic compositions comprising a compound that blocks epidermal growth factor and an antibody that blocks the PD-1/PD-1 ligand signaling pathway in the treatment of tumors of epithelial origin, particularly those that express the native form for human KRAS protein. In patients with cancer of epithelial origin expressing native KRAS treated with said therapeutic compositions, an increase in their survival was observed.

Abstract: An organic vapor jet printing (OVJP) device is provided that includes an OVJP print die having one or more delivery channels to deliver organic material and carrier gas to a region below the print die and one or more exhaust channels to remove material from below the print die. A directly-heated delivery line connected to the one or more delivery channels and a source of the organic material external to the OVJP print die includes a resistive material and a plurality of electrical connections to the resistive material. When a current is applied to the resistive material via the plurality of electrical connections, the resistive material heats the interior of the directly-heated delivery line.