these tests , comprising lymphocyte mitogen responsiveness , phenotyping of lymphocytes , uptake of low density lipoprotein by t cells , serum levels of neopterin , lipids and lipoproteins , as well as routine blood chemistry , were investigated for a possible effect of age and of the classification according to the senieur protocol of admission criteria by the european economic community 's concerted action program on aging ( eurage ) .
C0023779
lipids
C0023820
lipoproteins