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	1.	The effect of replacement of methionine by homocystine on survival of malignant and normal adult mammalian cells in culture. [electronic resource] by Halpern, B C Clark, B R Hardy, D N Halpern, R M Smith, R A Producer: 19740731 In: Proceedings of the National Academy of Sciences of the United States of America vol. 71 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	Effect of methionine replacement by homocystine in cultures containing both malignant rat breast carcinosarcoma (Walker-256) cells and normal adult rat liver fibroblasts. [electronic resource] by Halpern, B C Ezzell, R Hardy, D N Clark, B R Ashe, H Halpern, R M Smith, R A Producer: 19750728 In: In vitro vol. 11 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	3.	N5-methyltetrahydrofolate: homocysteine methyltransferase activity in extracts from normal, malignant and embryonic tissue culture cells. [electronic resource] by Ashe, H Clark, B R Chu, F Hardy, D N Halpern, B C Halpern, R M Smith, R A Producer: 19740718 In: Biochemical and biophysical research communications vol. 57 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	4.	New approach to antifolate treatment of certain cancers as demonstrated in tissue culture. [electronic resource] by Halpern, R M Halpern, B C Clark, B R Ashe, H Hardy, D N Jenkinson, P Y Chou, S C Smith, R A Producer: 19760301 In: Proceedings of the National Academy of Sciences of the United States of America vol. 72 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)