T lymphocytes that are involved in cellular mediated immunity include two types known as TCD8+ (Cytotoxic T lymphocytes) and TCD4+ (helper T lymphocytes). TCD4+ has four main subtypes, including TH1, TH2, TH17, and Treg Lymphocytes.TH17 lymphocytes play a role in defense against microbes that TH1 and TH2 lymphocytes have not the ability to respond to them. The most important cytokines, which ar...

micrornas are tiny, 18-25 nucleotides in length, non-coding rna molecules preserved throughout evolution. these molecules primarily control gene expression at the post-transcriptional and transcriptional levels. micrornas control target gene expression by a phenomenon known as rna interference. rna interference based therapeutics that utilize target gene silencing/degradation by specific micror...

multi-word lexical units are a typical feature of specialized dictionaries, in particular monolingual and bilingual maritime dictionaries. the paper studies the concept of the multi-word lexical unit and considers the similarities and differences of their selection and presentation in monolingual and bilingual maritime dictionaries. the work analyses such issues as the classification of multi-w...

dendritic cells (dcs) are antigen presenting cells with unique capability to take up and process antigens in the peripheral blood and tissues. they subsequently migrate to draining lymph nodes where they present these antigens and stimulate naive t lympho-cytes. during their life cycle, dcs go through two maturation stages and are referred to as immature and mature cells, respectively. while im...

Basic role based access control [RBAC] provides a mechanism for segregating access privileges based upon users' hierarchical roles within an organization. This model doesn't scale well when there is tight integration of multiple hierarchies. In a case where there is joint-tenancy and a requirement for different levels of disclosure based upon a user's hierarchy, or in our case, organization or ...

Role-based access control (RBAC) has recently received a lot of attention due to its exibility, expressive power and simplicity in administration. In RBAC permissions are associated with roles and users are made members of roles thereby acquiring the associated permissions. Centralized management of RBAC in large systems is a tedious and costly task. An appealing possibility is to use RBAC itse...