HEMATOPOIETIC TISSUES OLIVER P. JONES, PH.D. GROWTH OP LYMPH NODES, THYMUS AND SPLEEN, AND OUTPUT OF TH0RAcIc Duct LYMPHOCYTES IN THE NORMAL RAT. W. 0. Rcinhardt.’ Anat. Rec. 197-2.11, 2946. The results of studying growth of lymphoid tissues in 474 rats from birth to 19 months of age are very interesting, but most important for the hematologist are the data collected on the output of lymphocyte...

The deposition of amorphous calcium salts within the soft tissues is variously called mineralization or calcification. Two forms of calcium salts may be found in the soft tissues: calcium pyrophosphate dihydrate and calcium hydroxyapatite. If bony trabeculae are discernible within the mineralized focus the term ossification is used, sometimes prefixed with the terms ectopic or heterotopic. Ther...