what does the so called immune checkpoint blockade do?
What will be an ideal response?
prevents autoimmunity
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Why is the preservation of ancestor species, such as Mexican teosinte (Zea diploperennis), important in the context of human welfare?
A) Edible species, such as Z. diploperennis, can be used for food if all our food crops become extinct. B) Species such as Z. diploperennis can be used to manufacture anticancer drugs. C) Genes for pest resistance from species such as Z. diploperennis can be transferred to food crops. D) Genes from species such as Z. diploperennis can be inserted into imperiled livestock varieties to help prevent them from becoming extinct.
In the ABC model of floral determination, a different combination of the three genes specifies each floral organ. Which gene works in combination with the other two?
A. florigen B. B C. ethylene D. A E. C
A ________ is a mass of neoplastic cells
A) diploid culture B) metastasis C) tumor D) gall E) plaque
What enzyme is not found in Staphylococcus epidermis but is found in Staphylococcus aureus?
A. peroxidase B. catalase C. lysozyme D. coagulase E. lipase