A system to unambiguously describe the configurations of molecules with more than one asymmetric center was devised in 1956 by Robert Cahn, Christopher Ingold, and Vladimir Prelog. In the Cahn–Ingold– Prelog or RS system

TLS Online TPP Program

#Id: 10317

#Section 2: General Biology

Cytotoxic T Cells target tumor cells

Most tumor cells, express MHC class I molecules on their surface, cytotoxic T cells can directly recognize them. 

cytotoxic T cells can result in killing of the tumor cells by two different mechanisms

TLS Online TPP Program

#Id: 8854

#Section 3: Genetics, Cellular and Molecular Biology

Cohesins establish linkages between the replicated DNA molecules, which are essential for their accurate segregation later in the cell cycle. This linking mechanism is coupled to DNA replication.

TLS Online TPP Program

#Id: 9287

#Section 2: General Biology

TLS Online TPP Program

#Id: 8041

#Section 2: General Biology

There are two type representation of amino acid structure

1. By Fischer’s convention L and D

2. By absolute configuration RS System

TLS Online TPP Program

#Id: 3772

#Section 2: General Biology

Matter is anything that takes up space and has mass.