Monumental Nests

MonArch - Digital Archives for Monumental Buildings

Monumental buildings such as cathedrals or castles together with their often very old and large archives form an important part of our cultural memory and heritage. Unique documents like medieval manuscripts, precious incunables, and church registers as well as original building plans, construction reports, old chemical recipies used for repairing and various others can be found in these archiv...

Replaceable Nests

A radiographic survey of monumental masonry workers in Aberdeen.

Suitability of artificial nests.

Purification of erythroblastic nests.

We describe a method for preparing purified erythroblastic nests in large numbers (approximately 10(6)/run) in three steps: (1) induction of splenic erythropoiesis in mice, (2) preparative differential centrifugation for the removal of erythrocytes and single cells from spleen cell suspensions, and (3) sedimentation in an isokinetic gradient of Ficoll 400 in Joklik's modification of minimum ess...