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1.
Fig. 1.

Fig. 1. From: A multitude of genes expressed solely in meiotic or postmeiotic spermatogenic cells offers a myriad of contraceptive targets.

Heat maps showing the eight clusters of transcripts that change coincident with the formation of meiotic and postmeiotic male germ cells and the unclassified genes. Each row of the heat map represents a gene, and each column represents a time point in development (as labeled at the bottom). The color saturation represents differences in gene expression compared with day 1. Red indicates an increase in gene expression, whereas green indicates a decrease. The genes listed next to the heat maps are examples of known genes found in the respective clusters.

Nikolaus Schultz, et al. Proc Natl Acad Sci U S A. 2003 October 14;100(21):12201-12206.
2.
Fig. 2.

Fig. 2. From: A multitude of genes expressed solely in meiotic or postmeiotic spermatogenic cells offers a myriad of contraceptive targets.

Testis developmental profiles for clusters 1–5. (Upper) The relative gene transcript abundance in testis from mice at ages days 4, 8, 11, 14, 18, 21, 26, and 29 and adult compared with testis at day 1 of age. The values are the mean relative abundance (compared with day 1) for all transcripts found in each of the clusters. Note the marked increase in relative transcript abundance for cluster 4 coincident with formation of spermatids. (Lower) Hematoxylin/eosin staining of sections of testis from the same mice at ages days 1, 11, 14, and 26 to show germ cell differentiation at each age.

Nikolaus Schultz, et al. Proc Natl Acad Sci U S A. 2003 October 14;100(21):12201-12206.

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