Walter Oswaldo Cruz, Brazilian hematologist  (Petrópolis, Rio de Janeiro State 23 January 1910 – Rio de Janeiro  03 January 1967 )

Son of Oswaldo G. Cruz

Proposed that ancylostomotic anemia was due to disturbances in iron metabolism (1932)

Verified that hemostasis depends on innervations

With A.C. Oliveira showed the existence of a pulmonary role in hemostasis control and organism irrigation 

Revealed a hemostatic activity of compounds such as lipoproteins

Suggested that nervous control of vessels and the biochemical state of plasma in arterial blood play an important role in hemostasis

With A. C. de Oliveira developed a device for constant blood flow in a dog  (1958)

METHODS

With A.C. Oliveira. Dog’s isolated hind limb preparation as a suitable method for the study of hemostasis. Appl. Phys. 13:368-74, 1958

With L. De Meis, J.R. Magalhães & C.P. Von Dietrich developed isolated rabbit ear method for hemostasis in vivo (1962)

With C.P. Von Dietrich developed topical scarification in rat tail for hemostasis in vivo (1967)

Methods for quantitative determination of anti platelet serum power and determination of ratio between platelets to blood volume   

A method to observe the behavior of isolated samples of blood in haemostasis (1956-8)  

Colorimetric determination of methaemoglobin in normal animals. Acta Haematol. 6(6):367-76, 1951

With H. P. Oliveira. Total blood cell volume determination in normal and anaemic dogs using methaemoglobin as tracer. Acta Physiol. Lat. Am. 2(2):74-83, 1952

Quantitative method of titrating anti-platelet serum in vitro. J. Immunol. 71(5):346-51, 1953

Platelet determination by turbidimetry. Blood 9:920-6, 1954

With R.P. de Mello. Prophylaxis of hookworm anaemia deficiency disease. Blood 3:457-64, 1948