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The immutans (im) variegation mutant of Arabidopsis has green and white-sectored leaves due to the absence of fully functional plastid terminal oxidase (PTOX), a plastoquinol oxidase in thylakoid membranes. PTOX appears to be at the nexus of a growing number of biochemical pathways in the plastid, including carotenoid biosynthesis, PSI cyclic electron flow,(More)
Diagnosis: Mucinous carcinoma, likely primary. MICROSCOPIC FINDINGS AND CLINICAL COURSE Histopathologic examination revealed islands of atypi-cal basaloid cells floating in an abundance of mucin, consistent with mucinous carcinoma. Primary tumor vs secondary metastatic carcinoma could not be determined on histologic analysis alone. Findings of(More)
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