Abstract: In accordance with the present invention, there are provided novel receptor proteins characterized by having the following domains, reading from the N-terminal end of said protein: an extracellular, ligand-binding domain, a hydrophobic, trans-membrane domain, and an intracellular, receptor domain having serine kinase-like activity. The invention receptors optionally further comprise a second hydrophobic domain at the amino terminus thereof. The invention receptor proteins are further characterized by having sufficient binding affinity for at least one member of the activin/TGF-? superfamily of polypeptide growth factors such that concentrations of ?10 nM of said polypeptide growth factor occupy ?50% of the binding sites of said receptor protein. A presently preferred member of the invention superfamily of receptors binds specifically to activins, in preference to inhibins, transforming growth factor-?, and other non-activin-like proteins.

Abstract: A portable stove includes a housing and at least one basin member secured to the housing. The basin member forms a bottom pocket at one end and a top opening at another end. A burner extends into the pocket and provides heat that the basin member directs from the pocket to the top opening. A plate member defines holes at predetermined positions of its body and lies between the pocket and the top opening to distribute heat evenly across the top opening.

Abstract: A portable stove includes a housing and at least one basin member secured to the housing. The basin member forms a bottom pocket at one end and a top opening at another end. A burner extends into the pocket and provides heat that the basin member directs from the pocket to the top opening. A plate member defines holes at predetermined positions of its body and lies between the pocket and the top opening to distribute heat evenly across the top opening.