1. Tolerance and hematopoietic stem cell transplantation 50 years after Burnet's theory 
Franco Locatelli, Damiano Rondelli, G.Roberto Burgio 
Experimental Hematology 
Volume 28, Issue 5, Pages (May 2000)
DOI: /S X(00)

2. Figure 1
Possible biologic approaches for inducing alloantigen-specific tolerance. DC-2 indicates type 2 dendritic cells
Experimental Hematology  , DOI: ( /S X(00) )

3. Figure 2
Induction of antigen-specific unresponsiveness through blockade of costimulatory molecules (i.e., blockade of signal 2). APC = antigen presenting cell; TCR = T-cell receptor; LFA-1 = leukocyte function antigen-1; ICAM-1 = intercellular adhesion molecule-1
Experimental Hematology  , DOI: ( /S X(00) )