Ten-a and Ten-m are the two Drosophila members of the newly discovered Ten-m family of dimeric type II transmembrane proteins. Here, we report complete cDNA cloning and protein expression patterns of Ten-a. The Ten-a protein, a dimeric receptor of about 500 kDa is mainly expressed on axons of the embryonic central nervous system and on muscle attachment sites.

This paper examines some aspects of the security services in the CCITT Draft 1988 X.400 Recommendations for Message Handling Systems. A brief introduction to relevant cryptographic concepts is followed by a description of how some of the security services may be provided. Key management, as defined within the CCITT Draft X.500 Recommendations for Directory Services, and as referenced by the X.4...

This is a discussion paper on Index DSAs, which are advanced as part of a more service-oriented approach to using X.500. The paper argues that Index DSAs are needed to provide key services which cannot be provided by simply using the existing X.500 infrastructure. Some of the problems with the use of strict X.500 techniques are then discussed. An alternative approach is proposed using X.500 ser...

'Extra-welfarism' has received some attention in health economics, yet there is little consensus on what distinguishes it from more conventional 'welfarist economics'. In this paper, we seek to identify the characteristics of each in order to make a systematic comparison of the ways in which they evaluate alternative social states. The focus, though this is not intended to be exclusive, is on h...

[This corrects the article on p. 755 in vol. 8, PMID: 29163152.].

Status of this Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited.

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Given the positive integers m,n, solving the well known symmetric Diophantine equation xm+kyn=zm+kwn, where k is a rational number, is a challenge. By computer calculations, we show that for all integers k from 1 to 500, the Diophantine equation x6+ky3=z6+kw3 has infinitely many nontrivial (y≠w) rational solutions. Clearly, the same result holds for positive integers k whose cube-free part is n...

BACKGROUND AND PURPOSE A 1988 pilot study in Peru suggested an association between migraine and chronic exposure to high altitude. This study provides epidemiological evidence corroborating this. METHODS In a cross-sectional nationwide population-based study, a representative sample of Nepali-speaking adults were recruited through stratified multistage cluster sampling. They were visited at h...

Both origin and evolution of tuberculosis and its pathogens (Mycobacterium tuberculosis complex) are not fully understood. The paleopathological investigation of human remains offers a unique insight into the molecular evolution and spread including correlative data of the environment. The molecular analysis of material from Egypt (3000-500 BC), Sudan (200-600 AD), Hungary (600-1700 AD), Latvia...